Purée de Petits Pois (Green Pea Soup)

Soups of fresh, sweet green peas, cooked nearly like petits pois à la laitue but puréed and called purées, are very Parisian. Variations are made by adding one or two other ingredients: lettuce, chervil, cream, butter, croûtons, mint. Much better than old starchy peas in their pods are good frozen ones. Instead of thinning the purée to make soup, you ca…