materials:
1 medium onion
half a teaspoon of salt (3 Grams)

for the meatballs:
2 teaspoons of salt (15 grams)
1 teaspoon of baking soda (7 grams)
a few drops of lemon juice

for the minced meat:
600 grams of beef ribs
100 grams of lamb ribs
300 grams lean shank or neck of beef

1 tablespoon of oil (10 grams) for frying