Add all the ingredients into a small saucepan and place over medium heat. Once it begins to simmer, reduce to low and start stirring regularly. After 5 minutes, check the thickness and if it has reached the desired consistency, remove from the heat.
Pour or brush over your protein, vegetables, or dish of choice.
For a keto teriyaki marinade, only add 2 tablespoons of water and omit the xanthan gum. Do not simmer and simply soak your protein in it for 30 minutes. TO STORE: Teriyaki sauce should always be stored in the refrigerator, covered. It will keep well for up to two weeks. Be sure to whisk it thoroughly before adding it to your favorite dishes. TO FREEZE: Place leftover sauce in a shallow container or freezer friendly jar and store it in the freezer for up to 2 months.