Seeing as its recipe Saturday, here's the recipe for meatballs by Jonnie Boer, my boss and currently number 10 on the worlds best chefs list. (Owner of "De Librije", 3 michelin stars)
Ingredients (for 4 large meatballs)
400 grams of minced beef
2 tablespoons sweet soy sauce
2 tablespoons coarse mustard
1 tsp cayenne pepper
2 small eggs
80 g breadcrumbs
3 tbsp butter
1 pot of meat stock (380 ml) or homemade stock
Mix all ingredients (except the butter and the meat stock) and knead the minced meat by hand until everything is well mixed.
Divide it into 4 portions and spin into balls. Leave the balls covered for 30 minutes in the refrigerator.
Heat the butter in a frying pan and brown the balls in it.
Pour in the stock and allow the balls to turn occasionally, with the lid slanting on the pan, to cook over low heat for 45 minutes.
(I google translated the recipe, but it looks to be pretty well translated)(edited)