My best friend in England gave me this recipe. It's fast, tasty and quite elegant I think - and I usually have the ingredients on hand. Creme Fraiche is not readily available in Canada yet, so I have used both plain yogurt and sour cream, and even low-fat and no-fat versions. For petit pois I use good quality tiny peas and for greaseproof paper I substitue wax paper. Parchment would be fine too.