Wash the bean sprouts thoroughly and drain the water.
Boil water in a pan and blanch the bean sprouts for 1 minute, then rinse in cold water.
Drain the oil from the canned tuna and set aside.
In a bowl, combine the bean sprouts and tuna, then mix with gochujang, soy sauce, sesame oil, and minced garlic.
Transfer to a plate and sprinkle sesame seeds on top to finish.