I have a quick terryaki sauce.

1/3 cup soy sauce

3/4 cup light brown sugar.

Combine in a skillet, bring to a boil, then reduce to a simmer. Let it reduce to the consitancy you like.

You can add garlic, citrus (I usually use orange juice), ginger, scallion (Green/Spring onion), crushed red pepper flakes, or just about any Asian flavor to the last few moments of reduction to give it a bit of extra flavor you might want.

Store in an air tight container/jar. Use as needed.