Created by Dreamer_in_Ontario on October 30, 2011
Step 1: Brown beef cubes on all sides in hot fat.
Step 2: Add chopped onion and saute a few minutes.
Step 3: Pour in boiling water, season with salt and pepper, cover and braise gently until done (1.5 to 2 hours). If using, add the tomato puree in this step. Add mushroom during last 15 minutes of braising.
Step 4: Season to taste with paprika and salt, then thicken with corn starch blended with the cold water.
Step 5: If using, add sour cream and stir until thoroughly mixed in and hot.