Matzo Balls, Stuffed Lithuanian

Ingredients

• 2 eggs
• 2 cups water
• 10 tsp chicken fat
• 1-1/4 cups matzo meal
• Salt to taste
• 1/4 lb. ground beef
• 1 tbsp corn or sunflower oil
• 2 egg yolks
• 2 tbsp chicken fat (schmaltz), softened
• 2 tbsp matzo meal (approximate)
• 1/2 tsp salt
• 1/4 tsp cinnamon