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Is Walkers Monster Munch Pickled Onion Flavour Baked Corn Snack ultra-processed?

40 g Corn chips Sold in the United Kingdom, Ireland and France

Pack of Walkers Monster Munch Pickled Onion Flavour Baked Corn Snack

Yes, it's ultra-processed

  1. 1 Unprocessed
  2. 2 Kitchen staple
  3. 3 Processed
  4. 4 Ultra-processed

Signs of ultra-processing in its ingredients:

  • 20 ingredients
  • 5 additives
  • Nutri-Score D

Less processed corn chips

Less processed isn't automatically healthier, so compare the labels for what matters to you, such as sugar or salt.

Ingredients

Ultra-processing Processing signs are highlighted

Maize, Rapeseed Oil, Pickled Onion Seasoning, Flavourings, Whey Permeate (from Milk), Onion Powder, Sugar, Monosodium Glutamate, Disodium 5-ribonucleotide, Salt, Potassium Chloride, Garlic Powder, Hydrolysed Soya Protein, Citric Acid, Sulphite Ammonia Caramel, Made in a factory that also handles, Barley, Celery, Mustard

Additives: E150d Sulphite ammonia caramel , E330 Citric acid , E508 Potassium chloride , E621 Monosodium glutamate , E635 Disodium 5'-ribonucleotide

As written on the pack

Maize, Rapeseed Oil, Pickled Onion Seasoning (Flavourings, Whey Permeate (from Milk), Onion Powder, Sugar, Flavour Enhancers (Monosodium Glutamate, Disodium 5-ribonucleotide), Salt, Potassium Chloride, Garlic Powder, Hydrolysed Soya Protein (contains Wheat), Acid (Citric Acid), Colour (Sulphite Ammonia Caramel). Made in a factory that also handles: Gluten, Barley, Celery, Mustard.

What makes it ultra-processed

Cosmetic additives

Added to change how the food looks, feels or tastes, not to keep it safe. A hallmark of ultra-processed food.

  • E150d Sulphite ammonia caramel Sulphite ammonia caramel is the dark brown colour in colas and many sauces, made by heating sugars with sulphite and ammonia compounds.
  • E621 Monosodium glutamate Monosodium glutamate (MSG) is the sodium salt of glutamic acid, made by fermentation and used to strengthen savoury taste.
  • E635 Disodium 5'-ribonucleotide A food additive authorised for industrial food production.
  • Flavouring Flavourings are concentrated aroma preparations that add or intensify a taste.

Substances rarely used in home kitchens

Refined or extracted in factories, such as syrups made from starch or isolated proteins. The other hallmark of ultra-processed food.

  • Whey Whey is the liquid left over from cheese making, usually dried into a powder and used as a cheap source of milk solids, protein and lactose.
3 ingredients that would only make it processed

Kitchen staples like sugar, salt and oil. On their own they make a food processed, not ultra-processed.

  • Salty snacks Products in the category "Salty snacks" are at least group 3.
  • Salt Salt, added for taste and preservation.
  • Sugar Sugar refined from sugar cane or beet.

How the NOVA groups work

Among 359 corn chips

From least to most processed, this one ranks 279th. 46% of the corn chips here are ultra-processed.

Ranked by NOVA group, then by the number of ultra-processing signs, additives and ingredients. Our ordering, not part of NOVA.

All 359 corn chips, least processed first

About this information

  • Data from this product on Open Food Facts (barcode 5000328531007, last edited 1 September 2026), available under the Open Database License. If something is wrong or the recipe has changed, you can correct it there.
  • Photo: Open Food Facts contributors, CC BY-SA 3.0.
  • The NOVA group is an automated estimate from crowdsourced data: a missing or mistyped ingredient can change it.
  • NOVA measures processing, not nutrition. For nutrition, Open Food Facts gives this product a Nutri-Score of D (from A, best, to E).
  • General information, not medical or dietary advice. Check the pack if you have an allergy.