01 -
In a small saucepan over medium heat, combine the water, rice vinegar, sugar, honey, fish sauce, ketchup, garlic, ginger, and red pepper flakes. Stir well.
02 -
Bring the mixture to a gentle simmer, stirring until the sugar completely dissolves.
03 -
In a separate small bowl, mix the cornstarch with 2 tablespoons of water until smooth. Slowly add the cornstarch slurry to the saucepan while stirring continuously. Let it cook for another 2–3 minutes until the sauce thickens.
04 -
Remove the saucepan from heat and allow the sauce to cool. The sauce will thicken further as it cools.
05 -
Transfer the cooled sauce into a jar or bottle and refrigerate for up to 2 weeks.