Waste Not: Tips for Reducing Sourdough Starter Waste

A ritual as old as time, the art of sourdough baking is enjoying a resurgent global interest. However, the routine of feeding and discarding can accumulate into a big wastage. With a few mindful adjustments, bakers can not only minimize waste but also discover creative uses for the discarded starter. Here’s how.

To minimize waste while maintaining a sourdough starter, keep a smaller starter quantity (50 grams in total), refrigerate it to extend feeding intervals, utilize discarded starter in recipes like pancakes, waffles, or crackers, and consider drying excess starter to create sourdough flakes for longer term storage or sharing. 

1. Starting Small, Staying Small

Contrary to what one might assume, commencing your sourdough adventure doesn’t necessitate a vast quantity of ingredients. A modest beginning with just a 50 grams culture of equal parts by weight of flour and water can lay the foundation for a thriving sourdough culture. Such a small quantity makes it manageable for beginners and ensures less waste, especially in the initial stages when the starter is still stabilizing.

2. Planning Ahead of Upcoming Bakes

Anticipating your baking needs can make a big difference in managing your sourdough starter. If you’re gearing up to bake a substantial quantity of sourdough bread soon, it’s wise to tweak the volume of your starter accordingly.

If you know you’ll be baking a large batch of sourdough bread in a few days, adjust the amount of starter you maintain. This ensures you have enough for your recipe without unnecessary surplus.

3. Refrigerate to Slow Things Down

Storing your sourdough starter in the refrigerator acts as a form of ‘hibernation’, significantly decreasing the metabolic rates of the wild yeasts and bacteria within. This means they consume their food at a much slower pace, making it an ideal method for those who don’t bake on a daily basis.

The slowed microbial activity in a refrigerated environment means the voracious appetite of your starter is curbed. Instead of the daily feeding ritual, a weekly replenishment of fresh flour and water suffices, making it a convenient routine for busy or infrequent bakers.

4. Embrace the Discard

While the term “discard” might suggest waste, in the world of sourdough, it’s anything but. This byproduct of the feeding process, instead of being thrown away, can be the secret ingredient in a variety of dishes, introducing a unique tanginess that can elevate many recipes.

Using sourdough discard in pancakes and waffles not only adds a delightful tang but can also make them lighter and fluffier. The fermented nature of the discard can interact with leavening agents like baking soda, giving an extra lift to your breakfast treats.

Infusing sourdough discard into flatbread dough imparts a rustic flavor. Top with olive oil, rosemary, and sea salt for an artisan touch.

The subtle sourdough tang can be a delightful counterbalance in sweet muffins, be it blueberry, chocolate chip, or bran. The discard introduces moisture, ensuring soft, delectable results.

5. Share the Love

Gifting a portion of your mature starter is a wonderful way to help someone kickstart their sourdough journey. Provide them with care instructions and perhaps a favorite recipe. Not only does this reduce your own waste, but it also introduces others to the joys of sourdough baking.

Some communities have taken their love for sourdough to the next level by establishing sourdough libraries or exchange initiatives. These programs allow enthusiasts to deposit it at the library for others to use. New bakers or those looking to try a different strain can adopt a starter from the library. These initiatives often result in a diverse collection of starters from various regions, each with its unique flavor and history.

6. Opt for Drying

Preserving sourdough starter by drying is an age-old method that offers both practicality and longevity. This technique not only reduces the volume of your starter but also ensures you have a backup, should your active starter face any issues.

Use a spatula to spread the starter thinly and evenly across a piece of parchment paper or a silicone baking mat. Aim for a thin layer to ensure faster and even drying. Allow the starter to dry at room temperature, away from direct sunlight. This might take anywhere from 24 to 48 hours, depending on the ambient conditions.

Once fully dried, the starter will resemble a thin, brittle sheet. Gently break it into smaller flakes. Store these flakes in an airtight container or resealable bag, keeping it in a cool, dark place.

When you’re ready to use or share the dried starter, rehydrate it by mixing the flakes with equal parts water and allowing it to rest. Once it shows signs of activity, commence the regular feeding routine to bring it back to its active state.


Minimizing waste in sourdough routines is not just about reducing surplus; it’s about optimizing resources, fostering creativity, and celebrating the age-old tradition of bread-making. By adopting these strategies, bakers can ensure that every ounce of flour, water, and effort poured into their starter is respected and cherished.


Hey there! I'm Sam, your go-to pal for all things sourdough. I've been baking and kneading for 10 fun-filled years, and I can't wait to share the joy of turning simple ingredients into heavenly sourdough bread with you. Grab your apron and let's dive into this amazing world of sourdough bread together on this blog.

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