Fermented condiments
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If you ferment mash for your sauce, you already run the process that makes kimchi, kraut and fermented salsa. What differs is what happens after.
What you already know how to do
Salt brine, submersion, anaerobic conditions, time, and a falling pH you track rather than assume. The technique transfers directly.
So does the equipment and, usually, the supply: the peppers, garlic and onion are already in the building.
Where it diverges from sauce
A sauce is blended, cooked and bottled, which stops the ferment. A fermented condiment sold as a vegetable product is usually not cooked, which means it is still alive in the jar.
That changes the hazard conversation and the regulatory one. A live product in a sealed jar continues producing gas, and a jar that was full at packing can be under pressure a week later.
Live versus stabilized
Two routes, and they are different products. Live means refrigerated, a shorter life, a vented or robust closure, and a claim about live cultures that customers increasingly want.
Stabilized means pasteurized or otherwise halted, shelf stable, and no live culture claim. Easier to sell and ship, and the thing the customer buying fermented food was looking for is gone.
Decide which one you are making before designing the package, because a live product in an ambient-shelf jar is the failure mode.
Channel and shelf life
Refrigerated products need a cold chain you may not have. Markets are workable with a cooler; wholesale means the retailer has refrigerated shelf space and is willing to give it to you, which is a much harder listing than an ambient one.
Get the process reviewed for the specific product. The fermentation you understand from mash is the same biology in a different container with a different outcome, and the container is where the risk moved.