makes approx. 1 cup
Using a mortar and pestle, mash to a paste 1 tbsp sugar with the sliced chile and minced garlic.
Measure water in a glass measuring cup, add remaining 2 tbsp sugar and stir until sugar is dissolved. Add the mashed chile and garlic paste from step 1 and stir in the fish sauce and lime juice. Refrigerate in a tightly sealed jar.