# Knead the mixture of ground meat, 1 tbsp crumbs,
milk, egg white, salt and black
pepper, until the mixture smoothens.
# Then pick big pieces from the mixture and shape them as patties. Cover them by cycling film or nylon and place onto the lowest layer of the fridge. Refrigerate it for overnight.
# The day after, cover the meatballs with crumbs and fry them in a skillet with margarine.
# Add diced
onions into the remaining margarine and sauté it for a while, then add the finely sliced
mushrooms in it also.
# Pour this mixture all over the fried meatballs.
# Serve it hot.