450 g red jalapeno peppers, stems removed
225 g red serrano peppers, stems removed
80 ml water
4 cloves garlic, peeled
3 tbsp light brown sugar
1 tbsp kosher salt
120 ml distilled white vinegar
Step 1
In a blender, combine jalapeno peppers, serrano peppers, water, garlic, brown sugar, and salt. Pulse several times, then blend until smooth.
Step 2
Transfer the puree into a large glass jar or pitcher. Cover with plastic wrap and place in a cool, dark location for 3 to 5 days, stirring and scraping down the sides daily. The mixture will start to bubble and ferment. Rewrap after each stirring and return to a cool, dark place until bubbly.
Step 3
Pour the fermented mixture back into the blender; add vinegar and blend until smooth. Strain the mixture through a fine-mesh strainer into a saucepan, pushing as much pulp as possible through the strainer. Discard any remaining pulp, seeds, and skin left in the strainer.
Step 4
Transfer the sauce to a small saucepan; bring to a boil over medium heat, stirring often, until reduced to the desired thickness, about 5 to 10 minutes.
Step 5
Allow the sauce to cool to room temperature. It will thicken slightly when cooled. Transfer the sauce to jars or bottles and store in the refrigerator.