How is teriyaki sauce made?

The ingredients that are needed when preparing teriyaki Sauce recipe would be

one-fourth cup light soy sauce, one teaspoon of finely chopped ginger which can be substituted by half teaspoon of powdered ginger, one tablespoon of finely chopped garlic, two tablespoons of finely chopped green onions, one teaspoon of sweetener and two tablespoons of sherry.