Frosties nutrition: sugar, fibre, protein, fortification and more

A 30g bowl of Kellogg's Frosties contains 11.1g of free sugar, which is 46% of the daily limit for a child aged 7 to 10 and 58% for a child aged 4 to 6. A 40g bowl contains 14.8g, which is 62% of the daily limit for a child aged 7 to 10. Per 100g, Frosties contains 37g of sugar, making it one of the highest-sugar cereals in the Kellogg's range.

Per 100g: 37g sugar, 378 kcal, 0.73g salt, 2.5g fibre, 5g protein. Per 30g bowl with 125ml semi-skimmed milk: 11.1g free sugar, 172 kcal, 0.4g salt, 0.8g fibre, 5.7g protein. Per 40g bowl with 125ml semi-skimmed milk: 14.8g free sugar, 210 kcal, 0.5g salt, 1.0g fibre, 6.5g protein. Milk lactose does not count as free sugar under NHS guidelines.

Essentially yes. Frosties uses the same corn flake base as Kellogg's Corn Flakes, coated with a thick layer of sugar and malt flavouring. The base cereal contains 8g of sugar per 100g. The frosted coating takes the total to 37g of sugar per 100g. Switching from Frosties to Corn Flakes reduces free sugar from 11.1g to 2.4g per 30g bowl, a saving of 8.7g of free sugar at breakfast without changing the base cereal significantly.

A 30g bowl uses 58% of the daily free sugar limit for a child aged 4 to 6 and 46% for a child aged 7 to 10. A standard 40g bowl uses 78% for a child aged 4 to 6 and 62% for a child aged 7 to 10. A large 60g bowl uses 93% of the daily limit for a child aged 7 to 10 from breakfast alone, leaving almost no room for any other free sugar across the rest of the day.

The NHS recommends no more than 19g of free sugar per day for children aged 4 to 6, 24g for children aged 7 to 10, and 30g for anyone aged 11 and over. A 30g bowl of Frosties contains 11.1g of free sugar from the cereal alone. Milk lactose does not count toward this limit. This means a child aged 4 to 6 has used more than half their entire daily allowance before any other food or drink has been consumed.

Yes. Frosties contains barley, which contains gluten. The packaging carries a may contain peanuts warning. Frosties is not suitable for anyone with a gluten intolerance or coeliac disease. Parents of children with peanut allergies should check the most recent packaging before serving, as manufacturing processes and warnings can change over time. Frosties does not contain milk, eggs, nuts, fish, shellfish or soya as ingredients.

No. Frosties is made from corn that has been refined rather than left as whole grain. The bran and germ layers that contain most of a grain's natural fibre are removed during the refining process. This is reflected in the very low fibre content of 2.5g per 100g, the second lowest of any cereal in the Kellogg's range. By comparison, wholegrain cereals such as Weetabix or Shredded Wheat contain around 10g of fibre per 100g.

A 30g bowl of Frosties with 125ml semi-skimmed milk contains approximately 172 calories. A 40g bowl with milk contains 210 calories, a 50g bowl contains 248 calories and a 60g bowl contains 286 calories. For a child aged 4 to 6 with a daily energy need of around 1,400 calories, a 30g bowl represents approximately 12% of their daily requirement. The calorie content is similar to Corn Flakes despite the much higher sugar content.

Frosties contains 2.5g of fibre per 100g, which is 0.8g in a 30g bowl. This is the second lowest fibre content of any cereal in the Kellogg's range, above only Rice Krispies at 1.5g per 100g. The thick sugar coating displaces the grain content per gram, reducing the already low fibre contribution of the refined corn base further. The NHS recommends adults consume around 30g of fibre per day. A 30g bowl of Frosties provides less than 3% of this target.

Yes. A 30g bowl of Frosties provides 50% of the Reference Intake for vitamin D and 25% for thiamin, riboflavin, niacin, vitamin B6, folic acid and vitamin B12, alongside a contribution of iron. This is the same fortification profile as the rest of the Kellogg's range. Vitamin D is particularly relevant for UK children, many of whom have low vitamin D status especially during winter months.

Yes. Under the NOVA classification system, Frosties falls into group 4, ultra-processed foods. This classification reflects the combination of refined corn with a thick sugar and malt coating, added flavourings and the industrial processing methods used to create the final frosted flake. The sugar coating applied during manufacturing is a defining characteristic of ultra-processed foods that goes beyond simple cooking or adding salt and sugar at the table.

Frosties contains 37g of sugar per 100g compared to approximately 35g per 100g in Coco Pops, making Frosties very slightly higher in sugar. A 30g bowl of Frosties delivers 11.1g of free sugar versus approximately 10.5g from a 30g bowl of Coco Pops. Both are among the highest-sugar cereals in the Kellogg's range. The difference per bowl is small but Frosties edges ahead on sugar content across all portion sizes.

Frosties contains 0.73g of salt per 100g. A 30g bowl contains 0.2g of salt. With 125ml semi-skimmed milk, the total rises to approximately 0.4g. For a child aged 4 to 6 with a daily salt limit of 3g, a 30g bowl with milk represents around 13% of their daily allowance from breakfast. Salt is not the primary concern with Frosties. Sugar is significantly more significant at 37g per 100g.

Frosties contains 5g of protein per 100g, which is 1.5g in a 30g bowl before milk. With 125ml of semi-skimmed milk, which contributes approximately 4.2g of protein, the total reaches 5.7g. This is the lowest protein contribution of any cereal in the Kellogg's range before milk. For a child aged 7 to 10, a 30g bowl with milk provides around 24% of the daily protein guide of 24g, with almost all of it coming from the milk rather than the cereal.

Semi-skimmed or skimmed milk adds calcium, protein and vitamin D without additional free sugar. Given that Frosties already delivers 11.1g of free sugar per 30g bowl, choosing an unsweetened milk is essential to avoid adding further sugar to an already high-sugar bowl. Sweetened oat milk or flavoured milk would compound the sugar issue significantly. Whichever dairy milk you choose, the lactose does not count as free sugar under NHS guidelines.