This is the clasic Japanese grilling marinade, and it's uses are as endless as the Googled versions you'll find out there. Adding garlic is popular among many people, and I often do it my self. I find adding freashly minced cloves should be done 1/2 way though reducing to prevent burning, and poweder garlic should be added at the end to prevent over flavoring while reducing. Either way this basic sauce can be spiced up, thickened, hot, cold, anything you want for any food you crave. Have fun with it!
(Nutrient Info is based off the total of all ingredients, and is sourced from USDA food data base. http://www.nal.usda.gov/fnic/foodcomp/search/index.html)