Grain Handling & Brew Day Hardware

This hub is full of unfashionable purchases that pay for themselves. A grain mill, a correctly sized kettle, a way of keeping hop debris out of your pump: none of it photographs well, and all of it changes brew day more reliably than a controller firmware update.

Milling your own grain is the biggest cheap win

A homebrew shop crushes to one gap, chosen to be safe for the widest range of customers and systems. That gap is almost never optimal for yours. Owning a mill means you set the gap for your process -- tighter for BIAB and all-in-one systems where there is no sparge to worry about, wider if you fly sparge and need the husk intact as a filter bed -- and a change of a few thousandths of an inch is commonly worth several points of mash efficiency.

The secondary benefit is freshness. Crushed malt starts losing aroma within days and goes noticeably stale within weeks, so buying whole grain in bulk and milling on brew day both improves the beer and cuts the per-pound cost. See best grain mills, and grain mill gap settings for the actual numbers in thousandths.

Two rollers or three, and when it matters

Two-roller mills crush by squeezing grain once between a pair of knurled rollers. Three-roller mills pass the grain through two nips, which lets each nip be gentler while still opening the kernel -- in principle a better crush at the same gap, and faster throughput. In practice, for a brewer milling 10 to 15 pounds per batch, a well-set two-roller mill at the right gap is indistinguishable in the finished beer. The three-roller is worth it for volume and for very tight gaps. That is the whole argument, laid out properly in two-roller vs three-roller.

Kettles, and the capacity people get wrong

Buy a kettle at least 50 percent larger than your finished batch. A 5 gallon batch needs a 10 gallon kettle: pre-boil volume is around 7 gallons, hot break foams, and the gap between a vigorous boil and a boilover is a couple of inches of freeboard. The other spec worth paying for is welded fittings rather than stamped ones -- a welded tri-clamp ferrule can be rebuilt, where a stamped fitting that starts weeping is the end of the kettle. See best brew kettles and how to clean a brew kettle.

Hop debris is a pump and chiller problem

Nobody buys a hop spider for better beer. You buy one because 8 ounces of pellet hops turns into a slurry that will clog a plate chiller solid, jam a pump impeller and plug a dip tube. Containing hops in a 300 micron basket costs you a small amount of utilization and saves a brew day. The counter-argument -- that free-floating hops extract better -- is real, and hop spider vs bag weighs it honestly rather than pretending there is no trade-off.

Mash hardware, if you are not on an all-in-one

If you mash in a cooler or a kettle rather than an electric system, the false bottom or manifold is what determines whether your runnings flow or stick. A domed perforated plate resists collapse under grain weight and traps less wort beneath it than a flat plate does. See false bottoms explained and mash tun vs lauter tun if the terminology has been used at you without being defined.

Not sure what to buy next across the whole setup? The sequencing argument is brew day upgrade order, which feeds into the site-wide upgrade path.