1. Dissolve yeast in warm water in a small container and let it sit for 5 minutes.
2. In a bowl, mix together the flour, salt, and eggs one by one.
3. Pour the yeast/water mixture into the bowl while whisking to ensure a smooth batter without lumps.
4. Cover with a cloth and let it rest until the batter doubles in volume, about one hour (to speed up the process, place the bowl in the sink or in a larger bowl filled with warm water).
5. Heat a skillet (preferably a blini pan) with a little bit of fat.
6. Pour 2 tablespoons of batter per blini. Let it brown on each side.
7. Serve warm or cold with smoked salmon, cream, and lemons. You can also serve them with sweet toppings like honey or jam.