Place all the ingredients except the cornstarch into a blender with 1 cup of water and blend on high speed for 15 to 20 seconds.
Pour the mixture into a small saucepan over medium-low heat. Simmer gently for 20 minutes, stirring several times.
Mix the cornstarch with 2 tablespoons of water. Add the cornstarch slurry to the sauce and mix well.
When sauce begins to thicken, let it simmer on a very low temperature for 10 minutes. Remove from the heat and let cool. The sauce should be similar in thickness to steak sauce.
Store in a covered container in the refrigerator and serve with hamburgers, pastrami, or hot wings.