Make as directed, or substitute what you have on hand (including leftovers in the fridge that you think might go well.)
Hamburger Soup
3/4 – 1 lb lean ground beef
1 small-medium onion, chopped (or half of a large onion)
3 medium-large carrots, peeled (or scrubbed) and sliced
2 large or 3 medium potatoes, peeled (or scrubbed), and cubed
1 can [...]