This is a Russian potato-mushroom pancake, essentially. I had them as my first real meal in St. Petersburg and made it a point to get to biz-nes-lench (funny cognate!) on time when possible. They're definitely best served with sour cream and a bit of salt.
What you need:
about 4 large potatoes, lightly boiled and shredded
1c white mushrooms, chopped (I don't remember the actual name but you know the ones I'm talking about)
1 tsp salt
3 tbsp vegetable oil
This is an easy one. Heat the oil in a skillet over medium-high and whisk the potatoes together with the eggs, add the flour and salt and stir until well mixed. Add the chopped mushrooms and stir until even. Spoon the batter into the skillet and let it cook until the surface browns -- this can go from three to ten minutes depending on the temperament of your stovetop. Flip, as with any pancake, and serve after it browns on both sides :)