As little as possible, that amount being how little I can get away with without causing people to worry/interfere.
I love to cook and make all sorts of things for my family, I just never eat any of it.
Today I made them tuna and beetroot burgers with salad, and a chocolate and coconut cake for dessert.
It all looks (and apparently tastes) good, but at this point I'm not tempted at all.
Instead I stuck to my own limited food groups: 554 calories for today, which is decent, and 55% of that was protein.
I think about food and the avoidance of food more than anything else.
I have an eating disorder but I think autism super-charges it. I never eat in public or outside the house, having to eat something off-schedule sends me into meltdown, and I see all items of food as strings of numbers, calories and macronutrients.
It makes me sad, drives me to despair at times, but the illusion of control it provides is soothing enough to stop me fighting it. Fighting would be hell, and I don't think I could win at this point.