Step 1

In a small bowl, whisk together 2 tablespoons water and cornstarch. Set aside.

Step 2

In a medium saucepan, mix together remaining 1 cup water, garlic, peppers, sugar, vinegar, and salt. Bring to a boil over medium heat, reduce heat and simmer for 3 to 5 minutes.

Step 3

Stir cornstarch mixture to re-combine, then whisk into simmering sauce and cook until thickened, about 1 minute more. Remove from heat, let cool, and use immediately or store in an airtight container in the refrigerator.