Dirndl Kitchen

1 In case you have an oven safe pot, preheat oven to 320° F or 160° C. If not, see below for alternative method. 
12 Rinse and pat dry your steak. Cut into 8 pieces, then flatten each piece by putting it in a gallon-sized freezer bag and hammering it with the flat side of a meat hammer.
2 Cut onions in half, then slice. Cut bacon slices in half. Prepare your twine and keep scissors handy. You can also use toothpicks instead of the twine.
3 Spread a thin layer of mustard on the meat, season with salt and pepper. Cover with a generous amount of onion slices, about 5 pickle chips, and 1 slice of bacon.
4 Roll up and tie up with twine or secure the seams with toothpicks. Add butter to a large skillet and heat to medium high.
5 Sauté the Rouladen for a few minutes on all sides, until browned. Transfer to a large pot (oven safe if possible).
6 Medium dice the celery, the onion, carrot. Slice the leek. Add to the skillet you transferred the meat from.
7 As soon as they start yellowing in color, add a thin layer of red wine. Let the wine evaporate and refill with a thin layer of wine. Repeat until you used half a bottle. This will help develop a deeper flavor. Add salt, pepper, broth and pickle juice. Alternatively, you can also use beer! Beer gives it a different, wonderful flavor. I personally prefer the wine sauce, but they're both amazing options!
8 Add everything to the Rouladen. If the pot is oven safe, cover it with a lid and put in the oven for about 90 minutes. If it's not oven safe, cover and cook on your cooktop on medium-low heat instead.
9 If needed, add more broth about every 30 minutes or so. After 90 minutes, test to see if the roulades are tender (use a cooking spoon to gently press down on one). If not tender, cook for another 30 minutes (they may take even longer if using top-round steak). If they're tender, carefully remove them using tongs and keep them warm.
10 Strain the sauce and bring to a boil. Whisk together 1 Tbsp of mustard, a little bit of water and the corn starch. Whisk into the boiling sauce until desired consistency is reached. Season sauce to taste with salt, pepper, red wine and pickle juice.
11 Serve with spätzle and roasted carrots or any sides you desire! Bread dumplings, pretzel dumplings, potato dumplings would also make great starch sides. I also love red cabbage (Rotkohl) with Rouladen!