1/4 teaspoon each powdered ginger, garlic powder, onion powder, and freshly ground black pepper
Combine all the ingredients in a heavy non-reactive saucepan and gradually bring to a boil over medium heat. Reduce the heat slightly and gently simmer the sauce until thick and richly flavored, 10 to 15 minutes.
Taste for seasoning, adding lemon juice, brown sugar, or other ingredients as necessary. Transfer the sauce to a bowl or clean glass jars and let cool to room temperature, then refrigerate, covered, until ready to serve. The sauce can be served chilled or at room temperature.