A 30g bowl of M&S Golden Syrup Porridge contains 118 kcal, 4.3g of sugar (2.7g of free sugar), 2.0g of fibre and 4.0g of protein. With 125ml of semi-skimmed milk the bowl comes to 177 kcal and 10.2g of total sugar. It is classed as NOVA 4 (ultra-processed).
Of the 14.4g of sugar per 100g in Golden Syrup Porridge, Boone counts 9.1g as free sugar. The rest (5.3g) is lactose from milk powder, which the NHS limit does not count. Method: total sugar less 5.3g lactose from milk powder (estimated where the pack gives no percentage).
Golden Syrup Porridge is classed as NOVA 4, ultra-processed, because its ingredients include golden syrup, invert sugar and flavouring. These are industrial ingredients you would not use in a home kitchen. 2 of its 5 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.