This is a homemade teriyaki sauce/marinade that I found on allrecipes.com. It was really good! I made it with "Anniversary Chicken" and I can't wait to try it out with other things!!
2/3 cup mirin (Japanese sweet rice wine) - I found this in my regular grocery store in the asian section.
1 cup soy sauce
4 1/2 teaspoons rice vinegar
1 teaspoon sesame oil
1/3 cup white sugar
7 cloves garlic, minced
1 tablespoon minced fresh ginger
1 dash red pepper flakes
black pepper to taste
Bring mirin to a boil in a saucepan over high heat. Reduce heat to medium-low, and simmer for 10 minutes. Pour in soy sauce, rice vinegar, sesame oil, and sugar. Season with garlic, ginger, pepper flakes, and black pepper; simmer an additional 5 minutes. Store in a tightly sealed container in the refrigerator.