Finely chop the garlic and onion and set them aside.
Heat water in a pot and add the drained chickpeas in. Season and bring it to a boil.
Add the tomato puree along with the seasonings, chopped onion and garlic. Cook for 10 minutes.
Finish up with a squeeze of lemon juice, chopped mint leaves and some more salt and pepper.
Notes
You can also start with raw chickpeas if you don't have the canned ones. Soak them overnight and then cook them until they're soft, but still hold their shape.
You can adjust the consistency of the soup to your liking. Start with a little water, taste and add more if you prefer a broth-like consistency.
For a deeper flavor, you can also add a bit of tomato paste to the soup. Sometimes, I've even used my fire roasted tomatoes!
You can keep the chickpeas whole, or smash them up a little bit before you serve.