Yeast Washing: How to reuse brewing yeast to save money

Yes, you read that right. There’s such a thing as “yeast washing.” It goes by many names, including “yeast harvesting,” “yeast re-harvesting,” and “yeast rinsing.” Regardless of what you want to call it, one-gallon brewers can use this technique to brew with a wider variety of yeast strains, while saving money on liquid yeasts. I’ll walk you through how you can level-up your brewing skills with this technique. But first, let’s talk about why we’d want reuse that kind-of-gross-looking sludge at the bottom of our fermented wort.