Add oil in a hot sauce pan or braiser pan
3 tbsp extra virgin olive oil
Sauté the garlic and ginger, add onions, add peppercorns until fragrant.
4 cloves garlic, ½ tbsp fresh ginger, 1 whole shallot, ¾ tbsp peppercorns
Add the chicken stock, soy sauce, vinegar, brown sugar, bay leaves and mix.
¾ cup vegetable stock, 4 tbsp low sodium soy sauce, 2½ tbsp white distilled vinegar, 3 tbsp brown sugar, 3-4 bay leaves
Let the sauce simmer on low for fifteen minutes. Stir occasionally.(if you want a thick sauce, add a 1 tablespoon of cornstarch mixed with 1 tablespoons cold water, drop it in, and boil for one minute till the sauce thickens)