Mix all of the ingredients in a medium saucepan. Bring to a boil over high heat. Reduce the heat to low and simmer 10 minutes, stirring occasionally. Remove the saucepan from the heat and let cool to room temperature.
Spoon the mixture into your blender and cover. Blend on medium speed for 2 minutes or until smooth. Alternatively, you can use an immersion blender to puree the sauce in the saucepan.
Strain through a sieve to remove any remaining seeds.
Notes
Chili Option: You can substitute red jalapeno or serrano chilies for the Fresno chilies, if desired.
Recipe by Go Dairy Free at https://www.godairyfree.org/recipes/homemade-sriracha-barbecue-sauce