Mimi Cheng's Korean Glazed Beef

Dough: unbleached wheat flour (wheat flour, malted barley flour, niacin, reduced iron, thiamin mononitrate, riboflavin, folic acid), water, tapioca starch, sunflower oil., filling: grass-fed beef, onion, white cheddar cheese (pasteurized milk, cheese culture, salt, enzymes, potato starch, corn starch, powdered cellulose (added to prevent caking)), mayonnaise (sunflower oil, egg yolks, water, distilled vinegar, cane sugar, lemon juice, citric acid, lemon oil), water, gochujang (water, soybean powder, cane sugar, chili powder, tomato, brown rice syrup, sea salt, spirits), breadcrumbs (wheat flour yeast, sugar, salt), unsalted butter (pasteurized cream, natural flavorings), honey, garlic, sunflower oil, rice vinegar (water, rice), hot sauce (aged cayenne red peppers, distilled vinegar, water, salt, garlic powder), salt, fish sauce (anchovy, sea salt), mushroom powder (shitake mushrooms), black pepper.