With only simple ingredients, garlic broth is warming, filling and useful in many dishes. Ten Facts About Garlic Garlic - What is Garlic Nettle and Potato Soup Ingredients 2 heads of whole garlic 1 gallon water 1 onion, chopped Add to shopping list Save Recipe View list - Saved recipes Powered by Prep Time: 10 minutes Cook Time: 60 minutes Total Time: 70 minutes Yield: 1 Gallon Preparation Peel garlic cloves Crush cloves and place in large pot Chop onions and add to pot Add water Bring to a simmer and cook for 1 hour Strain if desired Add salt and pepper to taste