Ingredient Deep Dives
Long-form explainers on additives, preservatives, contaminants, and the ingredients that deserve a closer look.
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May 1, 2026 | 11 min read
PEG Allergy: Why This Hidden Ingredient Is Harder to Avoid Than You Think
PEG allergy is rare but potentially severe. Polyethylene glycol hides under dozens of names in medications, cosmetics, and even food. Learn the symptoms, how it's diagnosed, and why reading labels is not enough.
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Apr 28, 2026
Aluminum-Based Food Additives: Why Aldi Flags Baking-Powder Chemistry
Aldi flags several aluminum-based baking and firming salts separately. Here is what these additives do and why they read as a clean-label problem even when shoppers rarely know the chemistry.
Apr 28, 2026
Benzoate Preservatives: Why Aldi Flags Potassium Benzoate
Potassium benzoate is the Aldi list entry, but shoppers usually need the larger benzoate family context. Here is why these preservatives still matter on modern labels.
Apr 28, 2026
Bromates in Food: Why Aldi Still Flags Multiple Bread Additives
Aldi flags potassium bromate, calcium bromate, and bromated flour separately. Here is why shoppers need the grouped bromate picture, especially in bread and baking products.
Apr 28, 2026
Partially Hydrogenated Oils and Trans Fat: The Aldi Legacy Cleanup
Aldi's older restricted list names both partially hydrogenated oils and synthetic trans fat. Here is why that double wording still matters even after the main U.S. trans fat cleanup.
Apr 28, 2026
Sodium Hydroxide and Lye in Food: Why Aldi Flags These Processing Aids
Sodium hydroxide and lye sound alarming on an ingredient list, but their real story is about processing, not a headline ban. Here is why Aldi flags both names anyway.
Apr 28, 2026
Sulfites in Food: Why Aldi Flags Multiple Sulfite Additives Separately
Aldi lists potassium bisulfite and potassium metabisulfite separately, but shoppers usually need the bigger sulfite picture. Here is what sulfites do, where they appear, and why this family matters.
Apr 27, 2026
Acesulfame K: The Artificial Sweetener Aldi No Longer Wants
Acesulfame potassium still shows up in zero-sugar drinks, protein products, and gum even as retailers like Aldi move away from it. Here is what it does and why clean-label standards keep targeting it.
Apr 27, 2026
BHT: The Preservative That Usually Travels With BHA
BHT often appears next to BHA in cereals, snacks, and oils. Here is what it does, why Aldi excludes it, and why shoppers should treat the pair as a broader preservative pattern.
Apr 27, 2026
Blue 1: The Synthetic Dye Still Showing Up in Candy and Drinks
Blue 1 still shows up in sports drinks, frostings, candy, and novelty snacks even as retailers and state laws move against synthetic dyes. Here is what Blue 1 does, where it hides, and why Aldi already moved on it.
Apr 27, 2026
Blue 2: The Less-Famous Synthetic Dye Still Allowed in Food
Blue 2 does not get the same attention as Red 40 or Yellow 5, but it still shows up in candy, cereal, and baked snacks and remains part of the synthetic dye cleanup retailers and states are accelerating.
Apr 27, 2026
Brominated Vegetable Oil: The Soda Emulsifier Retailers Keep Dropping
Brominated vegetable oil helped citrus flavor stay suspended in soft drinks for decades. Now the FDA, California, and retailers like Aldi have all moved away from it.
Apr 27, 2026
Calcium Propionate: The Bread Preservative That Keeps Mold Away
Calcium propionate helps packaged bread last longer without visible mold, which is exactly why Aldi now treats it as a clean-label tradeoff worth removing.
Apr 27, 2026
Cyclamates: The Sweetener Family That Never Left the Regulatory Debate
Cyclamates sit in a strange regulatory position: banned from use in U.S. food but still relevant in global formulation and retailer exclusion lists. Here is why Aldi still bothers naming them.
Apr 27, 2026
Green 3: The Rare Food Dye Still Allowed in the U.S.
Green 3 is one of the least common synthetic food dyes still allowed in the U.S. That rarity does not make it irrelevant. It makes it a clear example of how obscure additives can stay legal long after shoppers stop wanting them.
Apr 27, 2026
Methylparaben: The Paraben Preservative That Slips Under the Radar
Methylparaben does not carry the same recognition as propylparaben, but it belongs to the same preservative family that retailers increasingly treat with suspicion.
Apr 27, 2026
Morpholine: The Fruit-Coating Chemical Most Shoppers Never Notice
Morpholine is a produce-coating chemical most shoppers never expect to encounter in the additive conversation. That is exactly why it strengthens the Aldi restricted-ingredients cluster.
Apr 27, 2026
MSG: The Flavor Enhancer Clean-Label Retailers Still Avoid
MSG remains legal and widely defended by mainstream regulators, but retailers like Aldi still treat it as an ingredient that clashes with a simpler private-label story.
Apr 27, 2026
Neotame: The Ultra-Potent Sweetener Most Shoppers Never Notice
Neotame is an ultra-potent sweetener used in tiny amounts, which is exactly why many shoppers never notice it on labels. Here is what it does and why Aldi wants it gone from store brands.
Apr 27, 2026
Olestra: The Fat Substitute People Forgot About
Olestra was once sold as the future of guilt-free snack food. It is now mostly remembered as a warning-label-era experiment that retailers still prefer to avoid.
Apr 27, 2026
Yellow 6: The Orange-Yellow Dye Still Everywhere in Snacks
Yellow 6 is one of the most common synthetic dyes still appearing in chips, candy, drinks, and baked snacks. Here is where it shows up, why regulators keep debating the broader dye family, and why Aldi removed it years ago.
Apr 26, 2026
Propylene Oxide: The Food Treatment Agent the EU Doesn't Allow
Propylene oxide is used in the U.S. to fumigate some spices, nuts, cocoa, and dried foods. The EU treats it very differently, making it a label-blind additive issue.
Apr 25, 2026
Bleached Flour: Why Europe Rejected Chemical Flour Bleaching
Bleached flour is still common in the U.S., but chemical flour bleaching is treated very differently abroad. Learn what bleaching does and how labels reveal it.
Apr 23, 2026
Potassium Iodate: The Bread Additive Europe Rejected
Potassium iodate can strengthen bread dough, but global regulators have treated it very differently from the U.S. Here is what it does and how to spot it.
Apr 7, 2026
E211 Food Code: Sodium Benzoate, Benzene Risk, and Labels
E211 means sodium benzoate, a common preservative in drinks and condiments. Learn where it appears, when benzene risk matters, and how to read labels.
Apr 1, 2026
Nitrates in Processed Meat: Are They Causing Cancer?
Processed meat is in IARC's top cancer risk category alongside tobacco — but that doesn't mean eating bacon is as dangerous as smoking. Here's what the nitrate science actually says.
Mar 31, 2026
PFAS in Food: Forever Chemicals, Real Risks, and What to Do
PFAS 'forever chemicals' have been detected in 97% of Americans' blood, and food is one of the main exposure pathways. Here's what the science says and how to reduce your risk.
Mar 28, 2026
Propylparaben: Why Europe Banned It and the US Hasn't Yet
Propylparaben is a common preservative in US tortillas, baked goods, and snacks — but the EU banned it from food in 2006 over hormone-disruption concerns. California follows in 2027. Here's what you need to know.
Mar 27, 2026
Mercury Fish List: High-Mercury Fish to Avoid and Safer Choices
Use this mercury fish list to compare high-mercury fish to avoid, lower-mercury seafood choices, and pregnancy and kids' seafood advice.
Mar 25, 2026
Bacillus Cereus Rice Toxin: Why Reheating Can't Kill Cereulide
Bacillus cereus can produce cereulide, a heat-stable rice toxin that reheating may not destroy. Learn safer rice storage and leftover timing.
Mar 20, 2026
Sucralose in Baking: What EFSA's 2026 Assessment Means for You
EFSA confirmed sucralose is safe in drinks and cold foods, but raised a serious flag for home baking — here's what the science says and what to use instead.
Mar 18, 2026
Carrageenan Explained: Why It Matters for Your Gut
Carrageenan is in thousands of everyday foods, from almond milk to deli meats. Learn what the latest science says about its effects on gut health, who should pay attention, and how to spot it on a label.
Mar 17, 2026
Are Seed Oils Bad for You? 30+ Studies Say No — Mostly
The internet says seed oils are toxic. Harvard, Johns Hopkins, and 30+ clinical trials say otherwise. Here's what the evidence actually shows — and where the real concerns are.
Mar 10, 2026
Azodicarbonamide (ADA): The Yoga Mat Chemical in US Bread
Azodicarbonamide is a bread additive banned across Europe, Australia, and the UK — yet still legal in the US. Here's what the science says and why it matters.
Mar 9, 2026
BHA: The Preservative the FDA Is Finally Reviewing
BHA has been listed as a probable carcinogen since 1991 and banned from general food use in the EU. The FDA issued a safety review request in February 2026 — 35 years later.
Mar 9, 2026
Potassium Bromate in Bread: Ban Status, Label Names, and Safer Choices
Learn why potassium bromate is restricted in many countries, how it appears on bread labels, and how to find bread without potassium bromate.
Mar 9, 2026
Titanium Dioxide (E171): Banned in EU, Still in US Candy
The EU banned titanium dioxide (E171) in 2022 over genotoxicity concerns. The FDA still allows it in candy, gum, and frosting across the US. Here's how to spot it on labels.
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