Making Soup Without a Recipe via Mayo Recipes Matter Details America Newscape shares Making Soup Without a Recipe via Mayo Recipes Matter You can create a comforting pot of soup anytime, with ingredients that you have on hand. Look for hearty vegetables that you can use to build a soup base — an onion or leek, a couple of carrots or celery stalks, maybe a bell pepper. Then, improvise the rest. Toss in seasonal vegetables, greens and herbs, or leftover proteins and grains. The toughest part? You have to decide whether to go for a broth-based bowl or a creamy cup.