Soup is one of the most forgiving dishes in cooking — but also one where the gap between mediocre and magnificent is enormous. The difference lies in your stock, your aromatics, your seasoning, and your finishing. Master these and you can make extraordinary soup from almost any ingredients.
The Foundation: Stock vs. Water
Good soup starts with good liquid. Homemade stock is ideal (see our stock-making guide), but good store-bought stock works. Avoid sodium-laden bouillon cubes as your only base — they flatten flavor rather than building depth. If using store-bought stock, taste it first and choose low-sodium options so you control the seasoning.
Water can work for very strongly flavored vegetable soups (lentil, bean) where ingredients will simmer long enough to build their own broth.
The Aromatics Base (Soffritto/Mirepoix)
Almost every soup begins with slowly cooked aromatics in fat:
- French mirepoix: Onion, carrot, celery (2:1:1 ratio) in butter
- Italian soffritto: Onion, carrot, celery in olive oil, often with garlic
- Spanish sofrito: Onion, garlic, tomatoes, in olive oil
- Asian soup bases: Ginger, garlic, sometimes scallions in oil
Cook aromatics slowly — 8-12 minutes on medium-low — until soft and translucent but not browned for lighter soups. Allow some goldening for richer, heartier soups.
The Four Soup Categories
1. Clear Broth Soups
The stock is the star. Everything must be clean, balanced, and clear. Chicken noodle, ramen, Vietnamese pho, French onion. These require the clearest, richest stock possible. Don't boil vigorously — a gentle simmer keeps them clear.
2. Thick, Creamy Purée Soups
Vegetables cooked in seasoned stock until tender, then blended smooth. Butternut squash, pea, carrot-ginger, roasted tomato. Blend with an immersion blender directly in the pot, or in batches in a standing blender. Add cream or butter at the end if desired. Texture comes from the starch of the vegetable, not necessarily from cream.
3. Bean and Legume Soups
Lentils, minestrone, pasta e fagioli, ribollita. These develop their own body from starch. Building flavor: fry aromatics, add spices, add stock + beans, simmer, season. Puréeing a portion and stirring it back in creates a creamy texture without any cream.
4. Hearty Stew-Like Soups
Clam chowder, bouillabaisse, gumbo, posole. These are borderline between soup and stew. They require more structure: building a roux or a soffrito base, often adding multiple ingredient types at different stages (proteins last, vegetables earlier).
Seasoning Soup
Soup needs more salt than you think because it's a large volume of liquid. Season in stages:
- When adding aromatics
- After adding stock
- Again at the end — taste and adjust
Add acid at the end: lemon juice, a splash of vinegar, or a few drops of sherry. This brightens the soup and makes it taste fresh rather than "cooked."
The Art of Garnish
Finishing touches transform soup from meal to experience:
- A drizzle of good olive oil
- A swirl of cream or crème fraîche
- Fresh herbs (parsley, chives, cilantro)
- Crispy croutons or fried bread
- A sprinkle of toasted seeds
- A spoonful of pesto or harissa
- Grated Parmesan over Italian soups
💡 Soup Tips
- Soups almost always taste better the next day — make ahead whenever possible
- Taste constantly and season in layers
- Add a Parmesan rind while simmering for incredible depth
- Don't overcook your vegetables — add delicate ones in the last 5-10 minutes
- The finishing acid is not optional — it completely transforms the soup