Cut the bacon into strips. Peel onions. Cut 2 into rings, dice 1. Cut cucumbers into sticks. Peel, wash and chop the carrot. Clean, wash and possibly halve the mushrooms
Dab roulades dry, season. Spread with 1 teaspoon of mustard on each. Spread onion rings, bacon and gherkins on top. Roll up and pin
Heat the oil in a casserole. Brown the roulades in it all around, take them out. Fry the carrot and onion cubes in the frying fat. Add mushrooms and fry briefly. Add roulades again and deglaze with approx. 3/4 l water. Bring everything to the boil, cover and stew for about 1 1/2 hours
Keep the roulades warm. Stir flour and 5 tablespoons of water until smooth. Stir into the stock, bring to the boil and simmer for about 5 minutes. Heat up the roulades in it. Serve with boiled potatoes and green beans