This adds “dead space” volume to the water equation. To further ensure the flow of wort, home brewers often use a combination of a false bottom and another pick up. All of these are bottom-resting pickups and are designed to hold back and / or keep the grain from passing into the kettle. Not to get ahead of ourselves, let’s first talk about wort - aka sugar water - and the current list of pickups / manifolds that include the stainless braided cord which is typically used for bathroom water line protection, #18 or #20 mesh screen formed around copper pipe and fitted to the ball valve, drilled or cut PVC or copper pipe, and a metal drilled or stamped plate called a false bottom. Before we compare the sequence of mashing steps used by home brewers, consider that any type of fluid filter is designed to allow passage of liquid while holding back particles larger than “x” micron. What is not fully understood by old and new brewers alike (yet) is that every step in mashing prior to releasing the wort into the boil kettle is predicated on the type of pickup used. It is considered common knowledge that the only sure way to transfer the highest volume of sugar into the boil kettle is by sparging, but brewers who use a removable fabric filter are discovering that this is simply not the case. In the brewing community, some still believe that using this type of filter creates changes in the home brew process that deviate too far from the conventional three vessel method. The use of fabrics for wort filtering is now old news that has been delivered to the home brew community’s doorstep as “Brew In A Bag”. How does changing the filter affect the brewing steps for home brewers? Comparing Different Filters & Processes.
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