The hottest Supply Chain Substack posts right now

And their main takeaways
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Top Business Topics
The Rotten Apple • 94 implied HN points • 26 Jan 26
  1. A new analysis of 795 food fraud cases shows many fraud incidents also create real food safety risks, so food fraud should be treated as a food safety issue, not just an authenticity problem.
  2. Although 98% of food samples meet pesticide MRLs, the remaining 2% clusters around specific commodities, origins and substances and causes most border rejections and reputational damage; companies must move MRL compliance upstream with supplier guarantees, targeted testing and tighter procurement controls.
  3. The infant formula cereulide problem may be linked to a recent change in ARA-enriched oil production using microalgae and a Bacillus licheniformis protease, highlighting that process changes can introduce unexpected toxin risks and need fast, thorough investigation.
The Rotten Apple • 52 implied HN points • 09 Feb 26
  1. Parmigiano Reggiano is a legally protected cheese made only in a specific Italian zone under strict rules, and its high value makes it a major target for counterfeiting and theft.
  2. Food-safety audits show hygiene, cleanability and maintenance problems (like poorly designed equipment, doors, walls and chemical controls) are the most common non-conformances, so fixing hygienic design and pest-proofing cuts a lot of risk.
  3. Food fraud is an ongoing threat with serious incidents (fake milk powder, counterfeit meat) and the response includes intelligence platforms, expert talks and events to share detection methods and strengthen authenticity controls.
@adlrocha Weekly Newsletter • 129 implied HN points • 21 Dec 25
  1. The food supply chain is critically important but built for maximum efficiency, so features like just-in-time inventory, long refrigerated transport, and minimal buffers make it brittle and prone to cascading failures.
  2. Extreme consolidation and geographic specialization concentrate risk in a few companies and regions, creating single points of failure that can shut down large parts of the global food system.
  3. Fixing it requires re-aligning incentives toward resilience. Building regional processing hubs, strategic reserves, and crop/supplier diversity will cost more but reduce the chance of catastrophic shortages.
SemiAnalysis • 8586 implied HN points • 10 Oct 23
  1. Google, AMD, Intel, Meta, Amazon, and Microsoft are all gearing up to challenge Nvidia's AI dominance.
  2. Nvidia is maintaining its hardware lead but facing increasing competition.
  3. Nvidia's supply chain mastery and potentially anti-competitive business tactics are key factors in their strategy.
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The Rotten Apple • 52 implied HN points • 02 Feb 26
  1. Listeria can hide deep inside equipment parts like conveyor belt fibres and hollow rollers where surface swabs and routine cleaning miss them.
  2. Eradicating persistent Listeria often requires a multifaceted 'seek and destroy' approach — thorough disassembly, chemical and heat treatments, intensive sampling — and sometimes replacing the contaminated equipment to stop product contamination.
  3. Reports that food fraud is “surging” may overstate the trend because higher counts can reflect increased awareness and enforcement; nonetheless food fraud remains widespread with many ongoing incidents, so vigilance and tools like webinars and resources are still needed.
Doomberg • 8671 implied HN points • 31 May 23
  1. The Great Ice Storm of 1998 had devastating impacts on areas in lower Quebec, parts of New England, and the Northeast megalopolis.
  2. The US power industry is facing a growing supply chain crisis, particularly with a chronic shortage of transformers, risking grid reliability.
  3. Industry leaders are urging for a $1 billion appropriation to address the transformer shortage and accelerate production via the Defense Production Act.
Asian Century Stocks • 805 implied HN points • 10 Jan 24
  1. Cocoa prices have spiked due to poor crops in West Africa, leading to challenges for chocolate producers.
  2. The tightness in the cocoa market is expected to persist, but historically, markets tend to return to balance within three years.
  3. High cocoa prices impact processors and chocolate manufacturers, who eventually pass on costs to consumers over approximately two years.
The Rotten Apple • 52 implied HN points • 19 Jan 26
  1. Cereulide in the infant formula recall likely came from a contaminated ingredient, possibly ARA oil made by fungal fermentation, where the toxin from a starchy fermentation substrate could partition into the oil.
  2. Cereulide is a heat‑stable, highly potent emetic toxin produced by Bacillus cereus in starchy materials; once formed it survives cooking and reheating, so control relies on preventing bacterial growth (rapid cooling, cold storage ≤5 °C, strict hot‑holding or discard rules).
  3. Pick a GFSI certification that fits your target markets, company maturity, local auditor availability and budget because there’s no one‑size‑fits‑all; importantly, GFSI clarified auditors with equivalent industry experience (not just degrees) remain eligible, easing the auditor shortage.
The Rotten Apple • 42 implied HN points • 26 Jan 26
  1. Food fraud creates food safety risks. New research has measured how often fraud incidents also pose safety hazards by analyzing 795 cases.
  2. Not all fraud is equally dangerous: the study categorizes which types of fraud, which hazards, and which foods are most likely to cause safety problems.
  3. The findings give practical guidance for industry to prioritize monitoring and prevention so resources target the fraud types and food products that pose the biggest safety risk.
Intercalation Station • 719 implied HN points • 09 Jan 24
  1. Sodium-ion battery technology has potential cost advantages and safety improvements but faces challenges in integration and market scale.
  2. Li-ion will likely continue to dominate the energy storage market by 2030, and the need for medium to long duration storage solutions is being assessed.
  3. Addressing material limitations in energy storage requires improved material sourcing, supply chain transparency, economic considerations, technical challenges, and community support.
Alex's Personal Blog • 98 implied HN points • 17 Dec 25
  1. Big AI labs are deliberately diversifying cloud and chip partners and raising massive sums to secure compute capacity, which spreads vendor dependence across several big players. This reduces single-vendor risk but also deepens ties between top cloud and chip companies and the major AI models.
  2. The US is using public funds and joint ventures to build domestic critical-minerals processing capacity, backing a Korea Zinc-led smelter project with loans, equity stakes, and subsidies to onshore supply chains. That approach hands significant control to U.S. public and private actors while accelerating industrial capacity at scale.
  3. Waymo is gearing up to rapidly scale its fleet and expand into many new cities, including international markets, and is courting large financing at a roughly $100B valuation because investors expect quick revenue growth. Its main risks are eroding rider and regulator trust if it moves too fast and tougher competition from rivals.
The Rotten Apple • 31 implied HN points • 02 Feb 26
  1. A strain of Clostridium botulinum that sickened infants was found in organic whole milk powder used in ByHeart formula, traced to a third‑party supplier and sparking blame between suppliers.
  2. Shrimp recalls for cesium‑137 contamination from Indonesian products are continuing, and some recalled shipments were not added to the FDA advisory page.
  3. WHO has updated INFOSAN manuals to strengthen national outbreak surveillance and response, and free guidance and webinars are available on allergen validation, metal detection, and international outbreak investigations.
Chartbook • 400 implied HN points • 05 Aug 25
  1. YKK is a global leader in zippers and has perfected its supply chain over many years. This shows how important logistics is for big companies.
  2. The history of the tortilla highlights its cultural significance and how food shapes societies. It's interesting to see how something so simple has deep roots.
  3. The importance of scale is clear in business; larger companies often have advantages, but they also face unique challenges. Understanding this can help smaller businesses compete.
Chartbook • 629 implied HN points • 25 May 25
  1. The leather industry in the US is facing challenges due to tariffs, which can affect the prices of products made from leather.
  2. Small boats are getting bigger, which might change how we think about fishing and travel at sea.
  3. The history of Liverpool is highlighted as a key part of understanding the changes in Britain.
The Rotten Apple • 42 implied HN points • 12 Jan 26
  1. A food-safety newsletter grew its audience in 2025 and plans to keep offering more events, resources, podcasts and curated content in 2026.
  2. Food fraud in 2025 was widespread and often disgusting or dangerous. Examples included toxic chemicals on sprouts, heavily contaminated juice, recycled 'saliva oil', meat substitution, reprocessed expired cheese and illegal bushmeat.
  3. Regulators and law enforcement carried out seizures, arrests and large recalls, and ongoing alerts (like a major infant formula recall and stolen green coffee) show that businesses and consumers need to stay vigilant.
The Rotten Apple • 31 implied HN points • 19 Jan 26
  1. Several unusual and serious recalls are happening right now, including a global infant formula recall for the heat‑stable cereulide toxin that has sickened infants, a sea moss gel pulled over possible botulism risk, and frozen beef patties recalled for E. coli O157:H7.
  2. Surveillance and policy are evolving: French monitoring found low STEC prevalence in beef, and the UK/EU have updated shelf‑life guidance to help keep ready‑to‑eat foods safe from Listeria throughout their shelf life.
  3. Food safety risks are both microbial and chemical, with rare outbreaks like Salmonella from raw oysters and extreme lead contamination found in some spices, highlighting the need for strong supplier controls, proper pH/temperature records, and correct cooking or handling.
Gad’s Newsletter • 23 implied HN points • 26 Jan 26
  1. Arctic shipping shortens distances but brings high extra costs and risks—ice‑class ships, slower speeds, higher insurance, and unreliable schedules—so only bulk, time‑insensitive cargo is likely to benefit in the near term.
  2. Greenland’s rare‑earth deposits can diversify and stabilize critical mineral supply for things like EV motors, but higher extraction and logistics costs mean a modest price premium rather than cheaper consumer goods.
  3. Glacial rock flour could materially lower fertilizer costs and boost crop yields, putting downward pressure on food prices long‑term, but that outcome hinges on solving expensive bulk shipping logistics or monetizing carbon credits to cover transport.
Gad’s Newsletter • 56 implied HN points • 01 Dec 25
  1. AI infrastructure investment is skyrocketing, with tech giants investing billions in data centers and chips. This could lead to major changes in how AI is developed and used in the future.
  2. The bullwhip effect is making the supply chain for AI unpredictable, causing spikes in demand that may not match actual needs. This could result in periods of overordering and shortages.
  3. Despite potential oversupply and price drops, the long-term demand for AI technology is expected to be strong. This means the current build-out is more likely part of a lasting change in the tech landscape rather than a temporary bubble.
Brad DeLong's Grasping Reality • 261 implied HN points • 17 Jun 25
  1. The Trump Mobile T1 smartphone is less about real technology and more about selling a confidence game. It's surprising how many people are willing to overlook this.
  2. The idea of making a high-spec phone in America for a low price is a fantasy. Real manufacturing takes much more investment and planning than what's being promised.
  3. Many reports about the T1 phone show uncertainty and skepticism. Experts think it's more of a marketing gimmick than a feasible product.
Gad’s Newsletter • 47 implied HN points • 08 Dec 25
  1. Kroger’s closure of big robotic fulfillment centers shows that centralized, capital-heavy automation often doesn’t fit grocery economics because thin margins, low and uneven online demand, long delivery distances, and volatile order patterns drove per-order costs too high.
  2. Faster, cheaper grocery fulfillment is more likely from local and flexible options — store-based picking, micro-fulfillment, and gig delivery cut last-mile costs and handle spiky demand better.
  3. Automation still has a role, but the future looks modular and collaborative: smaller, flexible robots, AI routing, and cobots that work with human pickers are more promising than giant, purpose-built robot warehouses.
Resilient Cyber • 299 implied HN points • 13 Dec 23
  1. It's important for organizations using open source software (OSS) to know the responsibilities of developers and suppliers. They should track updates and manage licenses to avoid risks.
  2. Creating a secure internal repository for OSS can help organizations ensure that the components meet safety and compliance standards before using them in products.
  3. Using Software Bill of Materials (SBOM) and Vulnerability Exploitability eXchange (VEX) documents helps improve transparency about the software components. This makes it easier to manage risks related to vulnerabilities.
Mindset Value • 393 implied HN points • 13 Apr 23
  1. Growing high-quality cannabis consistently at scale is extremely challenging.
  2. Investors and some individuals underestimate the complexities of large-scale cannabis cultivation.
  3. Successful cannabis cultivation at scale requires operational excellence and constant adaptation to consumer preferences.
Hardcore Software • 396 implied HN points • 14 Sep 23
  1. Apple's efforts to fight climate change go beyond the criticized video and involve significant, strategic initiatives.
  2. Apple's vertical integration approach to packaging optimizes materials, reduces waste, and enhances profitability.
  3. Apple's focus on sustainability extends to materials used in products, manufacturing processes, and transit efficiency, all contributing to environmental and financial benefits.
The Rotten Apple • 31 implied HN points • 15 Dec 25
  1. Big shifts happened in food safety this year — especially staff and resource cuts in the U.S. — while many countries tightened rules on packaging, food-contact materials and traceability, and serious incidents like heat-and-eat Listeria outbreaks and a radioactive shrimp recall show risks still persist.
  2. A wide range of emerging hazards are being tracked globally, from new pathogens and plant toxins to climate-driven mycotoxin changes; one notable rising foodborne threat is Trypanosoma cruzi, which can cause severe illness when contaminated juices or foods are consumed.
  3. Food fraud remains a major problem: honey adulteration has become so tangled that rice syrup is being sold as a honey alternative, and organised crime is relabelling expired products at scale, highlighting the need for better traceability and enforcement.
Pekingnology • 49 implied HN points • 11 Nov 25
  1. Chinese companies can help build strong supply chains in Africa, using their existing industrial parks to improve mining, agriculture, and light industry.
  2. China and Africa have complementary economies; while China exports manufactured goods, Africa supplies raw materials, supporting growth in both regions.
  3. Collaboration between China and Africa is evolving to integrate trade, infrastructure, and investment, boosting local production and creating jobs.
News Items • 275 implied HN points • 01 Sep 23
  1. Shipping is responsible for transporting 90% of everything, making it extremely efficient and cheap, which has changed the world economy.
  2. The supply of container ships and oil tankers is extremely tight, with high rates and very few new deliveries coming online, potentially leading to future disruptions and inflation.
  3. Global shipping is a critical indicator of economic activity and can be impacted by geopolitics, ESG trends, and global trade patterns like deglobalization.
Jay's Data Stream • 23 implied HN points • 25 Nov 25
  1. Starting a startup as a joke or out of stress rarely works; impulsive or unrelated side projects get poor execution and weak customer demand.
  2. CPG e-commerce is mostly marketing — you need relentless content, influencer work, and paid ads to drive sales, because a good product alone usually won’t sell itself.
  3. Physical product failures leave you with real inventory and logistics headaches; unlike digital businesses, you can’t just shut them down with one click.
The Rotten Apple • 21 implied HN points • 08 Dec 25
  1. Food safety consultants can design and fix food safety systems, run audits, train staff and help manage recalls. Define your needs up front, check credentials and references, agree the scope and costs (often US$50–$300/hr) before hiring.
  2. Lawsuits over ultra‑processed foods are growing and could widen legal scrutiny of big food makers. Food safety professionals should watch these cases and review their job responsibilities and contracts since legal actions might try to involve technical staff.
  3. New free food fraud resources — including a public database and a collection of ten case studies — are available to use in training and prevention. Use these curated materials and news to improve fraud detection, supplier checks and staff awareness.
Zero Day • 1161 implied HN points • 20 Apr 23
  1. Hackers compromised a software maker by embedding malware in another company's program, leading to a chain of infections.
  2. This breach shows the potential for threaded supply-chain hacks to infect multiple software suppliers and customers.
  3. Financially motivated North Korean hackers were behind the attack on 3CX and it's recommended that compromised software be deleted immediately.
TP’s Substack • 15 implied HN points • 16 Dec 25
  1. China is rapidly building a full AI hardware ecosystem — from semiconductors to memory, analog parts, cooling, and optical networking — which makes its domestic supernodes and clusters increasingly powerful.
  2. System-level limits like energy, interconnect bandwidth, and memory often leave chips idle, so tightly wiring many smaller chips into SuperPoDs or SuperClusters can be more effective than relying on bigger standalone chips.
  3. In the near term most AI will act like an advanced search/automation tool that replaces entry-level work, and while China may buy large numbers of H200s, those GPUs alone won’t be the core of its overall AI chip demand.
The Rotten Apple • 21 implied HN points • 01 Dec 25
  1. Illegal food colorants, like Auramine O, can be harmful and are often used to boost food's appearance. They can make spoiled food look better, which is dangerous for consumers.
  2. The tomato paste market is facing a potential fraud crisis due to oversupply from China and a drop in demand from Europe. This can lead to deceptive practices in food labeling and quality.
  3. PVC gloves for food handling may not be safe because they can break easily and contain harmful chemicals. There are calls to ban these gloves in favor of safer alternatives.
Future History • 190 implied HN points • 13 Feb 25
  1. The US heavily relies on Taiwan and South Korea for advanced chips. If China were to invade Taiwan, it could cut off the supply of these crucial components, affecting everything from smartphones to cars.
  2. Building chip manufacturing capacity in the US is not happening fast enough. The current efforts, including the Chips Act, are insufficient compared to what countries like South Korea are investing.
  3. Current tensions and trade policies can push China towards aggressive actions. If chip trade restrictions continue, it might lead to a conflict, putting the whole world at risk.
Resilient Cyber • 119 implied HN points • 07 Nov 23
  1. Not all software bills of materials (SBOMs) are the same, and they are important for software supply chain security. They help provide transparency about the components within software.
  2. The BOM Maturity Model can help evaluate how complete and useful a BOM is. It measures difficulty in obtaining data and assesses how well the BOM meets certain standards.
  3. As the industry works towards better SBOMs, tools and resources like the OWASP guides are crucial. They aim to improve understanding and detail in software management, similar to standards in food or pharmaceuticals.
Resilient Cyber • 99 implied HN points • 27 Nov 23
  1. Software supply chain attacks are increasing, and it's important to be aware of them.
  2. Both proprietary and open source software play roles in security, so understanding their impacts is vital.
  3. There are best practices and resources available to help improve software supply chain security.