Place the soybeans in a medium pot with enough water to cover them generously.
Bring to a boil over medium-high heat, stirring frequently.
Once boiling, immediately reduce the heat to low, allowing the mixture to bubble gently.
Cook until the beans are nearly tender, about 45 minutes.
Stir often and add more water as needed to keep the beans submerged.
Add the rice wine, sesame oil, kimchi, garlic, soy sauce, and cayenne to the pot.
Continue to simmer until the beans are completely soft and have absorbed the flavors, about 30 minutes more.
Taste the dish and adjust the seasoning.
Add more soy sauce for saltiness or cayenne for heat if desired.
Serve hot, garnished with fresh chopped scallions.
Don't be afraid to swap the beans! This recipe works beautifully with pinto, kidney, adzuki, or black-eyed peas.