Peel, dice an onion, and sweat it on oil.
Combine with the rest of the ingredients and mix until you'll get a smooth consistency.
Start forming meatballs. Each should be the size of a walnut.
Fry meatballs in oil (3-5 minutes on each side) or bake them in the oven (392°F / 200°C for 10-15 minutes).
Boil water with spices.
Mix the cold heavy cream with the flour and horseradish.
When the water with spices starts boiling, turn off the heat.
5 minutes later, start pouring the heavy cream with flour and horseradish very slowly, stirring constantly.
Add lemon juice and cook for another 2-3 minutes.
Add meatballs to the sauce. Serve warm.
