Anyone got a good teriyaki sauce recipe?

I make mine with soy sauce, toasted sesame oil, vegetable oil, rice wine vinegar, garlic, a little brown sugar and a little ketchup. I don't know exact measurements because I don't measure when I cook. Just don't use too much soy sauce or it will be very salty. Also, people usually put ginger in teriyaki, I leave it out cause I don'tlike it.