Cucumber and Yogurt Soup

A light, refreshing cold soup for hot summer days.

3 tablespoons mint
3 tablespoons dill, plus chopped sprigs to finish
2 tablespoons tarragon
2 cucumbers, peeled and roughly chopped
1 cup yogurt
1 cup chicken stock
1 cup walnuts, plus 1 tablespoon chopped walnuts to finish
1 cup stale breadcrumbs
½ cup olive oil, plus 1 tablespoon to finish
6 scallions, roughly chopped
2-4 peeled garlic cloves, depending on your taste
juice of ½ lemon
2 tablespoons white balsamic vinegar
sprinkle cayenne pepper
salt, to taste
sprinkle sumac, to finish, optional

Add mint, dill, and tarragon to food processor. Pulse. Add remaining ingredients. Chill. Portion into bowls. Top with dill, walnuts, olive oil, and sumac, if desired. Serve.