Growing food at home is one of my favorite hobbies. However, There are a lot of them that I had no idea how to grow. I am so used to buying seeds and growing them while forgetting about the ones that require no seeds.
While you can buy tomato and cucumber seeds at the store, onions, lettuce, and potatoes can be regrown by using part of the food. Here are other types of food you can regrow at home from BuzzFeed in the link below.
Easiest Vegetables To Grow In A Small Space
This is really good knowledge to have in case you want to start a small garden.