Hi all,
Well, I resisted the temptation to taste the ferment and let it go until today. (It's been 10 months.) I thought I'd finish this thread off by describing the result.
I decided to use two pro-biotic capsules to start the ferment. I did that to be safe, but I do want to try to use raw peppers next time to compare the results. The mash began to ferment after a couple days. It fermented very slowly, as most people have described here -- just a few bubbles per day, except at one point the mash bubbled into the airlock. I didn't leave enough head space. I had enough space to pull the airlock up a bit and let things continue. No harm done, apparently, and things settled down for the past 10 months.
I noticed several months ago that I had some white deposits on the surface of the ferment. I worried about them for awhile but decided to assume it was Kahm yeast, and to quit worrying. Today when I opened the jar, the white stuff was clinging to the cheesecloth, and when I took it and the marbles out, the white stuff came out with it. I tested the ph of the fermented mash, and it was 3.0, so I pronounced it safe. The mash had a fresh, if a bit odd, smell to it. Probably just the smell of the lactic acid?
I processed the mash through a food mill but decided not to cook it, preferring to keep the beneficial bacteria around. I did add a a small amount of water to loosen the mash up a bit, and when I got finished, the ph had risen to 3.1; still well within the safe zone, if I'm interpreting the experts here correctly. I plan to keep it in plastic "ketchup" bottles with the snap lid in my refrigerator. I'm thinking the lids will pop off if fermentation continues, but I suspect after 10 months, that's finished.
Then I tasted it. I couldn't believe how complex the flavor was! The variety of peppers, the bit of garlic, the smokiness, and the fermentation combined to produce very big flavor. The heat of the peppers was initially quite subtle, but came on strong after awhile and then lingered for longer than usual, I thought. The fermentation really subdued the smoky flavor. It's still present and obvious that the peppers were smoked, but the smoked flavor no longer dominates. (My daughter hated the fresh mash. It was far too smoky for her. I'm hoping she'll enjoy this fermented batch.)
In summary, I highly recommend a smoked, fermented sauce. The complexity of the flavors is really difficult to describe, but it's really enjoyable, and the heat doesn't smack you upside the head like it does with a fresh mash. The mash tastes especially good on a salty chip.
Thanks to the experts here for the tips.