For the grenadier march, cook the spiral noodles and potatoes separately in salted water until al dente. While the noodles and potatoes are cooking, put some oil in a pot and roast the Brunswick with the onion.
Peel the cooked potatoes and cut them into flakes.
Now add the noodles and potatoes to the roasted ingredients and season the grenadier march with salt, pepper and caraway to taste and mix well.