Remove the stems from the peppers. If you want the sauce less spicy remove some or all of the seeds.
In a medium size pot, toast the peppers on medium heat for 3-4 minutes. Stir occasionally and watch to keep from burning. The peppers will be very fragrant and may make your eyes water!
Add the apple cider vinegar and 1/2 cup water to pot and simmer for 15 minutes.
While the peppers are simmering, add the garlic, Koops' Mustard, salt and remaining water to blender.
Once peppers are done simmering, add the entire mixture in the pot to the blender.
Blend on low for about 30 seconds, then increase the speed to high for 1 minute. If needed, add more water until you reach your desired hot sauce consistency.
Once you reach your ideal consistency, scrap the hot sauce into to a jar or small container with a lid for storing.
Go ahead and give it a taste! Let it sit in the refrigerator for a couple of days for the flavors to fully combine.
Store in the refrigerator.