The featured voucher at the top of this page gives you 30% off milk and water kefir grains during back to school season, making it the best choice if you're stocking up on grains. With so many codes and deals available, the right offer depends on what you're buying and how much you're spending—here's how to find the biggest saving for your basket.
Small orders under $50: If you're picking up just one or two items, the flat dollar discounts work hardest for you. The $10 off voucher and the extra $5 off voucher both beat a percentage code on lower totals; compare them both at checkout and use whichever gives the larger discount. If neither of these apply, the 15% off sitewide code is a reliable fallback that works on any order.
Brewing courses: The kombucha brewing course gets a 50% reduction with the dedicated voucher—this is the steepest percentage discount on the whole list if you're looking to learn the craft.
Starter kits: The 25% off starter kits code is specifically tailored for bundled kits and beats the general percentage offers when buying a complete setup.
Orders of $50 to $75: A 30% discount starts to edge out the flat $10 or $5 vouchers at these mid-range totals. The 30% off closeout sale code and the back to school 30% off code both apply here, so check which products are in stock and eligible. The 15% off sitewide code is also still an option; calculate the exact saving from each code in your basket before you commit.
Orders over $75: Free shipping kicks in automatically, and you also unlock the free t-shirts deal with this code. Whether you go for the t-shirts or a percentage discount depends on which would save you more money; a 30% discount on a $100 order saves $30, while free shipping might only save $5 to $15 depending on your location. Compare both at checkout. If the t-shirts hold no appeal, the 30% off closeout sale or back to school codes remain your strongest percentage play.
Closeout and sale items: The 30% off closeout code and the up to 50% off last chance sale work on their respective product selections. The last chance sale isn't a code—it's an automatic discount applied on sale products, so you don't need to do anything to claim it. Check whether your items are marked as closeout or last chance sale items to see which applies.
First time newsletter sign up: If you're a new subscriber, signing up for the newsletter may unlock special offers, though the terms don't specify what those offers are.
Remember that only one code applies at checkout, so if you have multiple codes available for your basket, compare the final savings from each one and use whichever produces the biggest discount. The flat vouchers work best on smaller orders, while percentage codes take over once you hit around $40 to $50 of items.