My homemade Thai Sweet Chili Sauce is so much better than the store bought version! It's the perfect balance of spicy and sweet and easily customizable to your own preference! (Makes about 2 1/2 cups)
Add the sugar, salt, water and vinegar in a small saucepan. Heat over medium heat and stir until the sugar is dissolved and turn off the heat.
In a blender or food processor, add the red chilis, thai chilis, and garlic. Pulse until no large chunks are visible.
Add the chili garlic mixture to the saucepan. Heat over medium heat until the sauce has reduced by half.
Add the cornstarch slurry mixture and mix until thickened. Turn off the heat and let cool completely.
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Notes
My #1 key tip for this recipe is to avoid burning your Thai Sweet Chili Sauce - due to the high sugar content, there is a high possibility of burning if you make this on too high heat or do not monitor it closely. Burning will ruin the flavors of the sauce and will make it turn bitter.
Watch the sides of the pot - I noticed that there is a tendency for burning around the sides!
While reducing, the sauce should be simmering - if it begins to boil at all, lower the heat immediately (or take it off the heat entirely for a couple seconds).
Use the smallest burner on your stove to avoid over heating the pot.
Stir continuously while the Thai Sweet Chili Sauce is reducing.
Storage - You can store homemade Thai Sweet Chili Sauce in an airtight container in the refrigerator for up to 2 weeks.
Make sure your container is well sealed to prevent your sauce from spoiling.
Avoid dipping directly into the jar and only use clean utensils - any bacteria from food or used utensils will make your sauce go bad faster.
Don't leave your sauce out - put it back in the refrigerator after opening or using.