Spicy grilled Squid (오징어통구이)

Ingredients (serves 4):

1 large squid (about 1 ½ pounds)
2 cloves garlic cloves, minced
½ teaspoon minced ginger
3 tablespoons hot pepper paste (gochujang)
3 tablespoons rice syrup or corn syrup
1 teaspoon mustard
1 teaspoon soy sauce
1-2 teaspoons sesame oil
1 teaspoon sesame seeds
2 green onions, chopped
salt for cleaning the squid
vegetable oil