Can I use a different cut of beef instead of beef cheek?
Yes. Beef short ribs, chuck roast, or brisket work well; adjust cooking time based on thickness and tenderness (short ribs 90 min, chuck/brisket 2–2.5 hours).
How do I know when the beef is done?
The beef should shred easily with a fork and be completely tender. If it still resists, continue simmering for another 15–20 minutes.
Can I make this ahead?
Yes. Cook the beef and sauce up to 2 days ahead, refrigerate separately, then reheat and toss with fresh cooked udon noodles before serving.
What if I don't have gochujang?
Mix 1 tbsp sriracha or hot sauce with 1 tbsp miso paste and a pinch of sugar as a substitute, though flavor will differ slightly.
Can I use dried udon instead of pre-cooked?
Yes, but cook dried udon separately according to package directions and add at the end to prevent overcooking.