Warm 2 Tsp. olive oil in a skillet over medium heat. Once the oil is hot, add ginger and garlic to the pan and sauté for 1 minute, or until aromatic. Reduce heat to medium-low, and add the soy sauce, Hoisin sauce, and ½ cup of water before the garlic scorches. Dissolve the brown sugar into the sauce, then raise the heat to about medium and boil the sauce for 2-3 minutes, or until the sauce thickens. Cover with a lid and keep warm over low heat.