Sprinkle powdered gelatin over ¼ cup cold water in a small bowl and let it bloom for 5 minutes until swollen and spongy.
0.25 cup powdered gelatin, 0.75 cup water
Combine remaining ½ cup water, chamoy paste, tamarind paste, and sugar in a saucepan over medium-low heat. Stir constantly until sugar dissolves and the mixture reaches 140-160°F (about 3-4 minutes).
0.25 cup chamoy paste, 2 tbsp tamarind paste, 0.75 cup water, 0.25 cup sugar
Remove the saucepan from heat. Whisk in the bloomed gelatin until completely dissolved (30-45 seconds), then stir in lime juice, chili powder, and salt.
0.25 cup powdered gelatin, 2 tbsp lime juice, 0.25 tsp chili powder, pinch salt
Pour the mixture into silicone gummy molds. Tap molds gently on the counter to release any air bubbles. Refrigerate uncovered for at least 4 hours until gummies are firm and springy.
Flex the silicone molds to pop gummies out. Optionally toss gummies in extra chili powder for coating. Store in an airtight container in the fridge.
extra chili powder