Yep as Erm's pointed out any food without a free food allowance, is a simple calculation of 1 syn for every 20 calories.
That is snacks (cakes, chocolate, crisps, desserts, icecream etc), anything with pastry (even if it has a meat filling), all healthy extra items (when not using as healthy extras), sauces, condiments, soups, pre packed sandwiches, drinks