This sauce is a delightful blend of sweet and tangy flavors, perfect for enhancing your favorite dishes.
In a small bowl, combine the cornstarch with the cold water and whisk until smooth.
Ensure the cornstarch is fully dissolved to avoid lumps in the sauce.
In a small saucepan, combine the ketchup, sugar, vinegar, and soy sauce.
Mix the ingredients well to ensure a uniform flavor.
Place the saucepan over medium heat and bring the mixture to a gentle simmer.
Stir occasionally to prevent sticking or burning.
Slowly add the cornstarch mixture to the saucepan, stirring constantly.
Add the mixture gradually to control the sauce's consistency.
Continue cooking and stirring until the sauce thickens to your desired consistency.
Remove from heat once thickened to avoid overcooking.
Allow the sauce to cool slightly before serving or using as desired.
The sauce will thicken further as it cools.