I made this batch from locally grown (Kenosha County) jalapeños and habaneros grown for me and picked by me.
Ingrediants are 'Farmer Bob's Chile Peppers, vinegar and salt.
Label design by my son-in-law, bottles and fitments are woozies and can be purchased specifically for this purpose along with shrink wrap for the cap seal.
I had the farmer grow me a batch of Tabasco peppers and they are aging in a ceramic crock along with another mash in another crock as above.
As above, it's too early for chile peppers here.
You can purchase mash and make your own from sources on the 'net.
That is what most of these companies do, purchase mash, add whatever, bottle it up with a fancy label and price. I suspect that the super hot ones add capsicum.
For me the interest was in using a locally grown resource and not so much the process but it's not bad hot sauce.
I would search for a grower who if you have the time and lower back, will let you pick yourself.
It's satisfying and you know the source, some of the seller's at Farmers markets are just peddling stuff they purchased from commercial sources. That goes for road side stands. I always ask if grown by the seller and where.-Dick