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Lettuce Soup

This vibrant lettuce soup is a wonderful way to transform leafy greens into a silky, comforting meal. While lettuce is often reserved for salads, it develops a delicate, sweet flavour when simmered with aromatic coriander and softened onions. The addition of potato provides a natural creaminess and body without the need for heavy dairy, making this a sophisticated yet light vegetarian starter or a refreshing midweek lunch for those seeking something nutritious.

Quick to prepare and thrifty to make, this recipe is particularly useful for using up slightly wilted garden gluts or shop-bought gems. For the best results, use a mix of spring onions and shallots to enhance the savoury base, and serve with a crusty piece of sourdough or a swirl of soured cream for an elegant finish.

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Ingredients for Lettuce Soup

  • 120g chopped onions, spring onions, and/or shallots

  • 1 garlic clove, chopped

  • 3 tablespoons unsalted butter

  • 3/4 teaspoons ground coriander

  • 3/4 teaspoons salt

  • 1/4 teaspoons black pepper

  • 180ml diced (1/3 inch) peeled potato

  • 8 cups coarsely chopped lettuce leaves including ribs (350g)

  • 725ml water

How to make Lettuce Soup

Cook onion mixture and garlic in 2 tablespoons butter in a 4- to 5-quart heavy pot over moderately low heat, stirring, until softened, 3 to 5 minutes. Add coriander, salt, and pepper and cook, stirring, 1 minute. Stir in potato, lettuce, and water and bring to a boil, then reduce heat and simmer, covered, until potato is very tender, about 10 minutes.

Purée soup in batches in a blender (use caution when blending hot liquids) and transfer to a 2- to 3-quart saucepan. Bring soup to a simmer, then whisk in remaining tablespoon butter and salt and pepper to taste.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 17 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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