Combine minced meat, eggs, salt, pepper, and breadcrumbs. Form into small balls.
Heat fat in a pan over medium-high heat. Fry meatballs on all sides until browned and cooked through (internal temperature 63 °C / 145 °F), about 8-10 minutes. Remove and set aside.
Dice peppers, pickles, and onion. Add fat to the pan and heat over medium. Sauté vegetables for about 5 minutes. Add tomatoes and some of the pickling liquid. Stir in stock powder, sugar, and paprika powder. Season with salt and pepper. Return meatballs to the pan and simmer over medium heat for about 10 minutes.