White starch like boiled/roast potatoes and plain rice give me a spaceout almost like weed, but not quite as nice.

Pepsi Max and Coke Zero are both instant migraine triggers.

I know a few people who go completely hyper on certain food colours - Blue smarties are bad, but the mix in R. Whites lemonade are lethal.

I know people for whom caffeeine has a sedative effect.

I have texture problems with a lot of food that would otherwise be fine - pork chops, kedgeree and kidneys are three that come to mind - any of those will trigger a gag reflex as soon as they hit my mouth.

I can smell certain brassicas a mile off and it will completely put me off eating.