This was from my BBC Good Food Magazine a year or so ago. It is so easy to do and is delicious either served over white bean and garlic puree, or egg noodles. Being a low carber, I frequently have it over sauteed spinach with a little garlic added. TRY to get the creme fraiche, in the States I usually find it in the deli section with specialty cheeses. This also freezes very well.