Q: How long does tempeh culture stay active. The Farm says six months. How much leeway is there? Bulk seems cheaper and more convenient if the culture keep. Would storing itin the freezer, like bread yeast, prolong its life?
A: I’ve stored tempeh spores in the freezer and had fine results a year later. Eventually there’s some loss of vigor. GEM cultures states it this way: “Our laboratory tests show pts (powdered tempeh starter) to remain potent for 6 months or more, after which the incubation time may need to be longer, or more starter may be needed per pound of beans.”