Korean Steak Sandwiches
Gochujang, a fermented chili paste essential in Korean cooking, gives these sandwiches lots of pungent, spicy flavor. If you can't find it, substitute with a mix of 1/3 cup white miso, 3 tbsp. Sriracha chili sauce, 1 tbsp. unseasoned rice vinegar, and 1 tsp. regular (Hungarian) paprika.