Mesh Bag with Drawstring – Brew in a Bag (BIAB) – 26″ x 22″ (Extra Large)

This extra-large Brew in a Bag mesh bag is designed for BIAB brewing, a simple and efficient way to brew all-grain beer using a single kettle. Instead of a traditional mash tun, your crushed grain goes directly into this reusable mesh bag, which sits inside your kettle during the mash. When the mash is finished, you simply lift the bag out, let it drain, and move straight on to the boil.

BIAB is popular because it dramatically simplifies the brewing process. There’s less equipment to buy, less cleanup at the end of the day, and fewer transfers along the way. For many brewers, it’s the easiest way to step into all-grain brewing while still producing excellent beer. The fine mesh allows wort to flow freely while keeping grain contained, helping improve efficiency and clarity without the need for false bottoms or manifolds.

The 26″ x 22″ size is ideal for larger kettles and higher-gravity recipes. The extra width and depth give the grain plenty of room to move during the mash, which can improve conversion and make lifting and draining easier. If you’re brewing full-volume batches, bigger beers, or using kettles in the 10 to 15 gallon range, this size offers more flexibility and less risk of overflow.

We also carry 18″ x 24″ BIAB bags, which are a better fit for smaller kettles or lower-gravity batches. While the smaller bag works well in tighter setups, it can feel cramped when brewing larger grain bills. The extra-large version gives you more headroom and is often the better long-term choice if you plan to brew a wide range of styles.

Made from durable, washable mesh, this bag is fully reusable and easy to clean. A strong drawstring helps secure it to the kettle rim and makes removal straightforward once the mash is complete.

Whether you’re new to all-grain brewing or refining a streamlined setup, this extra-large BIAB bag is a reliable, practical tool that makes brew day easier.