Cut the pork into small pieces, you can take for the preparation of collars or another part.
For the marinade, mix soy sauce, vegetable and sesame oil, sugar, ginger, garlic through a press and sesame. Mix well.
Place the meat in the marinade and add the chopped onion, I have small onions. Mix well, put the load on top and leave to marinate for 2 hours, maybe longer.
Alternating meat with onions must be strung on wooden skewers. Bake in the oven at 180 C for 30-35 minutes or until the meat is ready. While baking, pour the meat with the remaining marinade.