My, what a tight mycelium you have!
You know how tempeh kind of sucks?
Admit it, it kind of does. I didn’t eat tempeh for about 10 years after I became a vegetarian, because it sort of tastes like ass.
These days I’m a tempeh fiend, however, because I make my own tempeh. Homemade tempeh is nothing like store bought, which has usually been frozen and defrosted and is super old. It’s an industrial product. Homemade tempeh, on the other hand, is full of umami and light mushroomy depth. Fried up homemade tempeh with sea salt is a delight, worthy of getting seriously excited about.
So: today is the day you learn how to make your own tempeh. Not your own tempeh reuben, not your own tempeh with mushroom scaloppine, your own tempeh. From beans and spore. From soy and culture. One legume plus a kickstarter starter plus time equals alchemy.
Homemade tempeh is at once harder and easier than you think. It’s hard because we’ve been inculcated (inoculated, even) to believe that tempeh is inherently weird, that fermentation is a dirty word, and that any recipe longer than 10 minutes is a waste of time.
This is a three day recipe for rotting soybeans. This might make things hard for some of you. For those of us free of those prejudices, tempeh is easy.
Once you know a few general principles and have figured out your incubator situation you can get a batch going in literally minutes. I make five or so pounds a week in less than half an hour for less than two dollars.
The first step to making great tempeh is buying the book Wild Fermentation by Sandor Katz. I know I’ve mentioned Sandor a bunch on this blog, but it never hurts to plug awesome people one more time. (In fact I just got an email from him the other day plugging a live fermentation intensive “webinar” he’ll be hosting soon – check it out, yo). Sandor is one of those people you’re just plain glad exist.
Wild Fermentation opened up a whole new world to me, and my tempeh recipe is taken directly from his, so first buy his book for more in-depth info on making tempeh. (Another great, though slightly more bizarre, resource is The Book of Tempeh.) If you want some hilarious fun, read the 1-star and 2-star negative Amazon reviews of Wild Fermentation – of course, the reasons these nuts disliked WF are the reasons I loved it. My favorite is the one that calls him an “Amish homosexual hippie.” YES!!
The second step is making an incubator. Sandor put up all the info on how my pal Aaron and I (OK, mostly Aaron) built my incubator on his website, so you might want to check that out (click on “tempeh incubator” on the little drop-down menu on the right, scroll over the picture to read the text so you understand what you’re looking at). All the info is repasted below as well.
Let’s say for now that you have your incubator. Now you need to order some tempeh spore (also called tempeh starter). I get mine from GEM cultures, so does everyone else I’ve ever heard of who makes tempeh. Let’s hope the good GEM cultures people never get tired of providing us with high-quality starters!
Now you’re ready to go.
Here is my recipe for tempeh – it makes a lot, five or so pounds. Roughly one-third of this recipe will make a nice-sized amount to start.

I usually start soaking the beans Friday night, cook them Saturday in the early afternoon, let them sit for a few hours to dry, then start fermentation on Saturday PM. I have great tempeh by late night on Sunday, or I turn the temperature down to about 85 degrees so it will be ready by Monday AM, depending on my schedule.


















that’s what she said