I want to talk about foods with the bare minimum ingredients where if you would have added more, it would have been a disservice.
Watcha got?
Edit: dude I got so much love on this post for something so simple, this is a solid community. Thanks for showing up guys
That's tough. The most versatile things are the basics: flour, milk, eggs, etc. but that's not very exciting.
I think the trick is to accumulate all that stuff and then find random other ingredients to focus a recipe on.
For example right now they always have Leeks at the market, and they are pretty cheap, so I've been making a lot of pies with them.