If you want to make a sauce that doesn't need refrigeration after opening, use vinegar. Be safe and get a PH meter. We put whole or cut chile pods in white vinegar for 2-3 years to let the flavors mellow and 'mature'(although 6 months should show much better flavor). The sharp bite from the vinegar is gone and it has a smooth 'liquor'-like consistency. We drain the vinegar from the pods and use it as a quick hot additive to many foods.(try it in marinades) The pods, of course, become sauces with just enough of the vinegar to keep it runny enough to come out of a bottle. Apple cider vinegar is used for some pods that will benefit from it's flavor, see what works for you. Be careful of wine and rice vinegars, as they may not be acidic enough.
I know many sauce-makers HATE vinegar, but I try to follow safe home canning and preserving methods as approved by the USDA, The Ball Blue Book, etc. If you want short-term sauces with no vin. for the fridge, just freeze your fresh pods and thaw only small amounts when needed.
brookthecook