Farmer Danielle’s Summer Squash Soup

For the Soup:

-3/4 stick (6 tablespoons) unsalted butter, cut into pieces
- 1 medium onion, halved lengthwise and thinly sliced crosswise.  Danielle used cipollini oinions.
- 1/2 teaspoon salt
- 2 lb yellow summer squash, halved and thinly sliced
- 1 and 1/2 pound of tomatoes (with skin), diced

-1 bunch sweet turnips diced and use skins.  Danielle used our Japanese Turnips.  You could also substitute potatoes.
- 4 cups chicken stock or reduced-sodium chicken broth

For pistou (stirred into the soup before eating)
- 3/4 cup loosely packed fresh mint leaves
- 1/2 cup loosely packed fresh flat-leaf parsley sprigs
- 1 large scallion, chopped (1/2 cup)
- 1/4 cup extra-virgin olive oil
- 2 tablespoons water
- 1/4 teaspoon salt

(1)     Make the soup by melting butter in a 6- to 8-quart wide heavy pot over moderate heat, then cook onion with salt, stirring, until softened, about 8 minutes. Add squash, tomato, turnips (or potatoes), and stock and bring to a boil. Reduce heat, then simmer, partially covered, until vegetables are very tender, about 20 minutes. Remove from heat and cool soup, uncovered, 10 minutes.

(2)     Working in batches, puree; soup in a blender until smooth (use caution when blending hot liquids) and transfer to a bowl. Return purée to cleaned pot and thin with water if desired; simmer 3 minutes. Season with salt.

(3)     Make pistou while vegetables simmer: Pulse mint, parsley, and scallion in a food processor until finely chopped. With motor running, add oil in a stream, then add water and salt, blending until incorporated.

(4)     Serve soups into bowls.  Swirl 1 tablespoon pistou into each bowl of soup.