Bul go ki marinade for barbecue 

  10 lb beef, any part for grilling

  3/4 cup soy sauce

  3/4 cup sugar

  3/4 cup water

  2 tsp pepper

  2 tbsp sesame oil

  2 inches piece ginger

  1 small onion

Slice beef into 3x3 inches pieces.
Roughly chop onion and ginger.
Put in a food processor, make puree.
Pour into a bowl.
Mix in all ingredients.

Pour the mixture over the beef, mix well.
Transfer to a container, put in a fridge for over night or up to 24 hours. Grill.