In a small saucepan over medium-high heat whisk together the soy sauce, bean paste, brown sugar, vinegar, sesame oil, sriracha, garlic, and pepper.
In a small bowl combine water and cornstarch. Whisk it into the sauce. Continue to simmer until it starts to thicken. Remove from heat and allow to cool.
Notes
Soy bean paste: This can be found at your local Asian grocery store or you can order it on Amazon.Adjusting Consistency: If your sauce is too watery, you can add cornstarch, one teaspoon at a time, until the desired thickness has been reached. You can also thin out the sauce if it's too thick by adding a little water.Refrigerate: Hoisin sauce will keep for up to 2 weeks in the refrigerator. Store in an airtight container.Freeze: It will keep for up to 3 months stored in the freezer in an airtight container. A little separation may occur once it thaws, so give it a good mix before serving!Makes about 1/2 cup.