McCoy's Cheddar & Onion: calories, salt and nutrition

How many calories are in McCoy's Cheddar & Onion? A standard bag (25g) contains 127 kcal and 0.47g of salt. A sharing bag (150g) contains 764 kcal and 2.84g of salt.

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Choose a brand, item and pack size to see how calories, salt, saturated fat and sugar compare to daily limits for any age group.

Nutrition by pack size

The table below shows how the nutrition of McCoy's Cheddar & Onion changes across pack formats.

McCoy's Cheddar & Onion contains 509 kcal, 29.5g of fat (3.16g saturated), 56.8g of carbohydrate (1.68g sugar), 4.21g of fibre, 6.32g of protein and 1.89g of salt per 100g.

McCoy's Cheddar & Onion uses actual dried cheddar cheese powder, triggering both milk and wheat allergen declarations. The cheese powder content is why it has a slightly higher protein figure than plain McCoy's flavours.

A standard bag (25g) and a sharing bag (150g) contain very different amounts. A standard bag delivers 127 kcal and 0.47g of salt. A sharing bag delivers 764 kcal and 2.84g of salt, 47% of the adult daily limit, from a single product.

This matters because crisps are one of the easiest snacks to eat passively. Opening a sharing bag while watching television, or finishing a grab bag that was opened for a small snack, is common. The table above shows the nutritional impact at each pack size so the difference is visible before reaching into the bag.

How it compares to daily limits by age group

The table below shows how a standard portion of McCoy's Cheddar & Onion compares to daily limits for sugar, salt and protein across age groups.

Salt

McCoy's Cheddar & Onion contains 1.89g of salt per 100g. A standard bag (25g) delivers 0.47g of salt, 8% of the adult daily limit of 6g and 16% of the limit for a child aged 4 to 6 (3g). A sharing bag (150g) delivers 2.84g of salt, 47% of the adult daily limit.

Saturated fat

McCoy's Cheddar & Onion contains 3.16g of saturated fat per 100g, 16% of the adult daily guideline of 20g. A standard bag (25g) delivers 0.79g of saturated fat (4% of the adult guideline). A sharing bag (150g) delivers 4.74g (24% of the adult guideline).

The saturated fat content of 3.16g per 100g is moderate for this type of snack. Most crisps fried in sunflower oil contain 2 to 3.5g of saturated fat per 100g.

Sugar

McCoy's Cheddar & Onion contains 1.68g of sugar per 100g. For most savoury snacks, sugar is a minor component of the seasoning blend rather than a primary ingredient. A standard bag (25g) contains 0.42g of sugar, a negligible contribution to the daily free sugar limit of 30g for adults.

Fibre and protein

McCoy's Cheddar & Onion contains 4.21g of fibre and 6.32g of protein per 100g. A standard bag (25g) provides 1.05g of fibre (4% of the adult daily target of 30g) and 1.58g of protein.

Ultra-processed food: what is really in it

McCoy's Cheddar & Onion is made from one main component: ridge-cut potato crisps.

Reading the ingredient list closely, it contains flavourings, yeast extract and colourings. Flavourings create or enhance the taste of the product, often replacing or supplementing natural flavour sources to deliver a consistent result across batches. Yeast extract adds savoury depth and amplifies perceived saltiness without adding extra salt, a technique known as flavour enhancement. Colourings standardise the appearance of the seasoning across batches, since natural ingredients vary in colour.

A home-made equivalent, prepared in one kitchen from whole ingredients, would use a handful of recognisable components with no additives. These processing aids are used because the brief contact time during industrial frying or baking is insufficient to develop the complex, stable flavours the seasoning provides at scale.

Looking at the ingredient list tells a different story from just the headline numbers. The additives and processing aids give this product its consistent flavour at industrial scale.

Allergens at a glance

Frequently asked questions

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Nutrition information from manufacturer official sources and UK FoodData Central. Figures calculated per 100g; per-portion values are proportional estimates and may vary slightly from pack label figures. Reference intakes: EU Reference Intakes for an average adult (2,000 kcal); NHS/SACN salt and saturated fat guidelines. For guidance only, not medical advice.