Peel and possibly halve the shallots. Wash the pork tenderloin, dab dry and cut into medallions. Season with salt and pepper. Heat oil in a pan and fry medallions on both sides for 3 minutes each until golden brown. Remove and keep warm. Add shallots to the frying fat and fry until translucent. Add tomato puree and sweat.
Deglaze with stock and wine and boil down for 5 minutes. In the meantime, heat the fat in a pan and fry the potato noodles until golden brown all around. Add peppercorns. Season to taste with salt and sugar. Arrange everything together and drizzle with sauce. Garnish with pepper pancakes if desired.