A 30g bowl of M&S Mixed Fruit Muesli contains 110 kcal, 3.6g of sugar (1.1g of free sugar), 2.6g of fibre and 2.8g of protein. With 125ml of semi-skimmed milk the bowl comes to 169 kcal and 9.4g of total sugar. It is classed as NOVA 4 (ultra-processed).
Of the 11.9g of sugar per 100g in Mixed Fruit Muesli, Boone counts 3.7g as free sugar. The rest (8.2g) is sugar in whole dried fruit, which the NHS limit does not count. Method: total sugar less 8.2g from whole dried fruit (estimated where the pack gives no percentage).
Mixed Fruit Muesli is classed as NOVA 4, ultra-processed, because its ingredients include flavouring. These are industrial ingredients you would not use in a home kitchen. 1 of its 13 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.