Ingredients

  • 2 tablespoons unsalted butter
  • 1 leek, diced
  • 1 onion, diced
  • 1 pound sorrel, tough stems removed, and leaves finely chopped
  • 2 cloves garlic, minced
  • 2 tablespoons lemon juice
  • 1 teaspoon salt, or to taste
  • Freshly ground pepper
  • 1/2 cup sour cream or creme fraiche
  • 2 hard-boiled eggs (optional)
  • 2 cups croutons
  • 1 English cucumber, thinly sliced

Method

  • Heat a stockpot, melt the butter, and scatter the leek and onion on top, sauteing until the onion is transparent.
  • Pour in 4 cups water, and bring to a boil.
  • Add the sorrel, garlic, lemon juice, and salt and pepper (about 5 twists of the pepper mill).
  • Simmer for 15 minutes, stirring occasionally, then remove from the heat.
  • Once the soup has cooled for about 10 minutes, puree, and serve warm with a dollop of sour cream or creme fraiche, or as a cold soup, the way Jews coming to France from Russia did: finely chop the hard-boiled eggs, and stir them into the soup; cool completely in the refrigerator, and serve cold, garnished with the croutons, cucumber slices, and a dollop of sour cream or creme fraiche.