A blini is basically a crepe that is made with activated yeast and buckwheat flour. There are many blini recipes, each with different variations. Try this one.
yeast, active dry
2 1/4 teaspoons
with the yolks and whites separated
Dissolve the yeast into the warm milk in a bowl. The milk must be at least 100 degrees to properly activate the yeast, but not over 110 or it will kill it.
Cover the bowl and let it sit for 5 to 10 minutes.
Whisk the egg yolks and add them and the butter to the milk.
Sift the flours with the salt and then mix the wet and dry ingredients.
Beat the egg whites until just stiff and fold them into the mixture.
Preheat a griddle with melted butter and ladle servings of the batter onto it.
Cook until lightly golden on each side.
Serve warm with your favourite toppings or fillings.