Yes, a SCOBY (Symbiotic Culture Of Bacteria and Yeast) is generally safe to eat and can be used in recipes. It's essentially fermented food, similar to kombucha itself.
A SCOBY is a living culture of bacteria and yeast that ferments sweetened tea to produce kombucha. It's a cellulose-based structure that houses these microorganisms. Because it's a product of fermentation, it's naturally acidic, which helps prevent the growth of harmful bacteria. When using a SCOBY in recipes, consider its flavor profile, which is typically tart and slightly vinegary. You can blend it into smoothies for a probiotic boost, candy it for a chewy treat, or even use it as a vegan leather alternative (though this is more for crafting than eating). Before consuming, ensure the SCOBY looks and smells healthy – it should be firm, have a slightly sour smell, and be free of mold. Avoid SCOBYs that are discolored (other than the normal tan or brown), slimy, or have an unpleasant odor.
If you're new to eating SCOBYs, start with a small amount to see how your digestive system reacts. Some people may experience mild digestive upset due to the high probiotic content.