Combine all the seasonings in a bowl and set aside
In a large skillet, preheat 1 Tbsp oil over medium heat. Add onion, ginger, and garlic until aromatic, about 3 minutes
Add ground beef and cook until it's no longer pink, about 5-7 minutes. Add the seasonings you prepared earlier and stir to combine everything and cook for another 2 minutes
Remove from the heat and sprinkle with toasted white sesame seeds and finely chopped green onion
Serves with rice and a side dish like kimchi
Leftovers:
Let it cool down completely and then store in an air-tight container and keep in the fridge for 2-3 days. This also freezes well. It can be kept frozen for up to 2 monhts. Simply reheat on the stove without having to thaw first