(which, incidentally, are a handy base for prawn cocktail :)

OK I've dragged the Rosella brand Tomato Sauce out of the cupboard and this is what it says:

Tomato Puree (78%), Sugar, Salt, Food Acid (Acetic), Spice Extracts, Garlic Extract.

No HFCS in sight - it's pretty uncommon in any food here, unless it's imported from the US :)

As for Mayonnaise, it's usually Kraft if nothing else in the fridge, or a delicious whole-egg that I remember little about except (a)I know what it looks like (b) I find it in the health food section of the supermarket (c) it's gluten free and (d) I've run out :(

Will report back the next time I feel compelled to have some chips :)