Pre-cooking and cooking: about 50 min, standing: about half an hour.
Mix flour, salt and yeast in a baking bowl. Add crème fraîche and milk, stir to form a liquid dough. Cover and let stand at room temperature for about half an hour.
Stir in butter, fold in snow exactly, bake blinis on the spot.
To bake: heat a little oil in a non-stick frying pan. Pour in portions of 1 tablespoon of dough at a time, quickly form into 7 cm dia. cookies with a spoon, reduce temperature. Once the bottoms are baked and they release by themselves, turn blinis to the other side, finish baking, keep warm with the lid closed.
Filling: mix cream cheese until smooth, fold in whipped cream and salmon, season. Spread filling evenly on blinis, garnish, bring to table on the spot.
Can be prepared: Cook blinis 1 day in advance, cool, keep in refrigerator with lid closed. Warm in the stove heated to 60 ° C for about Fifteen minutes.