Finely chop the habanero peppers (be sure to wear gloves and avoid touching your face, especially eyes). Measure out the remaining ingredients: cider vinegar, ketchup, dark brown sugar, water, dry mustard, minced onion, garlic powder, cayenne pepper, salt, molasses, and hot sauce.
In a saucepan or medium pot, combine the apple cider vinegar, ketchup, dark brown sugar, water, dry mustard, minced onion, garlic powder, cayenne pepper, salt, molasses, and hot sauce. Stir the mixture well to combine all ingredients.
Bring the mixture to a simmer over medium heat. Stir occasionally to ensure the sugar dissolves completely. Add the finely chopped habanero peppers to the saucepan. Continue to cook the sauce for about 30 minutes, stirring occasionally. This will allow the flavors to blend and the sauce to thicken.
Taste the sauce and adjust the seasoning if necessary. If you want more heat, you can add extra hot sauce or chopped habaneros.
Once the sauce has thickened and the flavors have developed, remove from heat. Let the sauce cool to room temperature before transferring it to a jar or bottle for storage. The sauce can be stored in the refrigerator for up to 2-3 weeks.