Dice the onions, then fry the minced meat in a pan or saucepan until crumbly with the addition of a little oil, add the diced onions and fry with them. Season the sausage meat with mustard and spice mixture. Pour in approx. 1/2 liter of stock and mix with the seared minced meat. Now add the still raw pasta to the minced meat bouillon mixture. Simmer for about 20 minutes, stirring occasionally.
If there is a risk of burning, add a little more water if necessary. Finally, turn off the plate and mix in the beaker of sour cream.