Anybody know how to make or where to buy teriyaki sauce like Jack uses?

[SaltyNuts]

LOVE Jack in the Box teriyaki bowls. Their teriyaki sauce is so good. Its thick. Whenever I look at teriyaki sauce at the store, however, it is very thin - like a soy sauce. How do I make, or where can I buy, teriyaki sauce like Jack uses?

By the way, teriyaki bowls might be the healthiest food from any fast food place. Almost no fat. Just fyi fellas.

Thanks!

 

[Drako]