Just trying to understand the science... Fermenting raises the acidity, creating an environment that keeps the nasties out. Vinegar does the same thing. So is it necessary to use vinegar if the peppers have been fermented? Or, is the acidity in the finished sauce not going to be enough with just fermented peppers, so vinegar is still necessary?
Also, do most commercial sauces use fermented peppers?
Also, do most commercial sauces use fermented peppers?