Mixing batter and preparing pasta seem like great starts, too. The general idea is to not let the kid handle anything with heat or sharp knives until they’re old enough to “respect” the danger behind those things.

My own initiation was whisking mayo (where I live it’s traditional to prepare a potato-mayo salad on Sundays). Then when my nephew was young I kind of tried to teach him how to prepare some onigiri (he already liked them better than sandwich), with already cooked rice and fillings, but he was a bit too lazy to do it, and a bit too eager to eat the ingredients.