Remove the membrane from the ribs, then cut them into single pieces and soak in cold water for 1 hour.
Blend all the marinade ingredients together until smooth. Ham Ji Park's ribs are VERY sweet. I didn't make mine quite as sweet, so add more oligodang or sugar if you want.
Drain the water from the ribs and pat them dry with paper towels. Set some of the marinade aside for basting later, then massage the rest into the ribs.
Lightly oil your grill and make sure the heat is high enough to get a nice char on the ribs
When it starts to char, flip them over and baste with the reserved marinade. Continue basting and flipping occasionally for about 25 minutes
Optional: slice some onions and cook them in a skillet (on the grill) with a little oil. The ribs should be done once the onions start to soften. Put the ribs on the skillet and remove from heat.