The very early cooking memory for me is making mince pies. I'd cut out the shaped tops (a variety of christmas trees, stars, bells etc) whilst mum did the bases and filled them and I'd put the covers on and glaze them. Slightly later I'd get to roll the pastry as well.

Much like making our own pizzas (putting the toppings on) - you had entertained children whilst also being productive. I wouldn't have described this as "chores" though. (they came later)