Ingredients

2 pounds beefsteak or plum tomatoes, cored and quartered

1 1/2 cups canned tomato juice

1 tablespoon finely grated, peeled fresh ginger

1 teaspoon ground coriander

1 teaspoon sugar

2 tablespoons extra-virgin olive oil

4 tablespoons freshly squeezed lime juice (from 2 to 3 limes)

Coarse salt and ground pepper

1/2 cup plain low-fat yogurt

Flatbread, for serving (optional)

Preparation

Working in two batches, place in a blender tomatoes, tomato juice, ginger, coriander, sugar, oil, and 3 tablespoons lime juice; puree on high speed until liquefied. Pour batches into a large bowl. Season generously with salt and pepper; refrigerate until cold, about 1 hour. Before serving, taste for seasoning. If desired, thin with cold water.

In a small bowl, whisk yogurt and remaining tablespoon lime juice until smooth; season with salt and pepper. Ladle soup into four serving bowls; top each with a dollop of yogurt and, if desired, serve with toasted flatbread.