A 30g bowl of Sainsbury's Choco Malties contains 111 kcal, 6.4g of sugar (all of it free sugar), 2.4g of fibre and 2.8g of protein. With 125ml of semi-skimmed milk the bowl comes to 170 kcal and 12.3g of total sugar. It is classed as NOVA 4 (ultra-processed).
All 21.4g of sugar per 100g in Choco Malties counts as free sugar, because it comes from added sugars rather than whole fruit or milk. A 30g bowl gives 6.4g, about 1.6 teaspoons.
Choco Malties is classed as NOVA 4, ultra-processed, because its ingredients include invert sugar and flavouring. These are industrial ingredients you would not use in a home kitchen. 2 of its 9 ingredients are of this kind.
Boone classifies processing from the published ingredient list using the NOVA system. Added vitamins and minerals are not counted as a marker of ultra-processing.