This homemade Red Sesame Sauce is perfect for Korean Tacos.

1 teaspoon sesame oil
1 tablespoon rice vinegar
1 tablespoon soy sauce
1 tablespoon sweet chili sauce
2 garlic cloves, finely minced

Balance above ratios to your liking.

Experiment with below (* my preferences)

honey  *
sriracha *
red pepper flakes *
pepper *
salt *
sugar
duck sauce
korean red chili paste
sesame seeds, toasted
scallions, finely shredded