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Frequenly asked Questions

Welcome to our FAQs page! Here, we’ve compiled a list of frequently asked questions to provide you with quick and helpful answers. Whether you have questions about our products, shipping, or any other inquiries, you’ll find the information you need right here. Browse through the sections below to find the answers you’re looking for. If you can’t find what you’re seeking, feel free to reach out to our friendly customer support team for further assistance.

Grinder retention refers to the coffee grounds that get stuck inside a grinder after the grinding process. This can lead to inconsistent amounts and taste when brewing, as old coffee grounds from a previous grind can mix with new ones.

Our silicone bellows hopper is designed to eliminate grinder retention. By blowing air into the bean inlet during the grinding process, it ensures all freshly ground coffee is dispensed, leaving no leftover from the previous grind.

Born out of a love for coffee and a determination to reduce waste, LESBREW COFFEE was founded by Leslie Chan in 2021. Leslie, a coffee enthusiast himself, designed and developed our signature product - the bellows hopper, after his wife pointed out the wastage of coffee grounds during the grinding process. Our mission at LESBREW COFFEE is to enhance the home brewing experience by providing innovative, high-quality coffee accessories.

Our products are uniquely designed with both aesthetics and functionality in mind. The air leak prevention design in our bellows hopper, for example, is unmatched in the industry. Each component is meticulously crafted, from the food-safe silicone bellows to the non-toxic PLA connector, lid, and locking ring, and the TPU gasket - all to ensure you get the best out of your brew without wastage.

Our bellows hopper is a game-changer in tackling grinder retention - the coffee that lingers in a grinder post grinding. When you start grinding your measured coffee beans, simultaneously pump the bellows. The pumping action generates an airflow through the grinder's bean inlet, pushing out all the coffee grounds. This way, every ground coffee you get is fresh, and none is left for the next grind, ensuring a consistent and superior brew every time.

Our bellows hopper is assembled vertically with several components. It starts with a connector that attaches to the grinder's bean inlet, made from non-toxic PLA and 3D printed in-house. Above this, we have our food-safe silicone bellows moulded by an appointed factory. To prevent air leaks, we include a soft, non-toxic TPU gasket. At the top, there's a locking ring, also made from non-toxic PLA, which ensures a secure fit of the lid. Our materials are non-toxic, durable, and designed to provide an effective and safe brewing experience.

Our bellows hopper is designed to fit a wide variety of coffee grinders. However, due to the diversity in grinder designs, we recommend checking the product description or contacting us directly to confirm compatibility with your specific grinder model.

Cleaning the bellows hopper is a breeze. Simply disassemble the parts and wash each one with mild soap and room-temperature water. Make sure all the parts are completely dry before you reassemble them. This ensures the longevity and performance of your bellows hopper.


We're happy to offer worldwide shipping 24 hours a day. Exceptions apply for countries currently at war or facing significant instability.

While we don't accept returns, we stand by our product's quality. If you encounter any fitting issues, let us know. We'll work with you to find a solution, which could include fixing and resending the product. Your satisfaction is our priority.

Are you a coffee equipment business owner, a coffee influencer, a distributor, or a grinder manufacturer? Let's collaborate! Visit our "Let's Talk Business" page and get in touch. We're excited to explore new partnerships and opportunities.

We stand behind the quality of our products. That's why we offer a 2-year warranty on our bellows hopper. If you encounter any issues during this period, please contact us, and we'll be glad to assist you.

Absolutely! We love helping coffee enthusiasts brew the perfect cup. Check out our blog for helpful articles about coffee brewing, grinder retention, and how to get the most from your LESBREW COFFEE products.


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