I make my own chili powder, five spice and garam masala. These are not difficult to make but I wouldn’t call them exactly easy as there are more than 3 steps to making them. But one thing I make instead of buying is so easy I don’t know why everyone doesn’t do it. Tahini. Toast the sesame seeds in a dry pan. Put seeds in food processor and process until it’s a crumbly powder. Add vegetable oil a little at a time until it’s the consistency that you want. Add salt to taste and pulse to mix. Writing it all out was harder than actually making it.
Now you. Is there something you make from scratch that most people buy-- that’s easy?