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All-grain brewing produces better beer than extract for one fundamental reason: you control the entire sugar profile from the grain, which means full control over body, fermentability, color, and flavor in ways that malt extract doesn’t allow. I made the jump from extract to all-grain after two years of extract brewing, and the learning curve was real, but it was mostly about getting the right equipment assembled in the right configuration. With the correct gear, all-grain brewing isn’t significantly more difficult than extract brewing, just more equipment-intensive. Here’s exactly what you need and what each piece does.
The mash tun
The mash tun holds the grain and hot water during the mash, maintaining temperature for 60–90 minutes while enzymes convert starches to sugars. Options: a converted 5-gallon round cooler ($30–40 with a false bottom or bazooka screen) holds temperature passively for a single-infusion mash with less than 1°F drop over 60 minutes, the most common homebrewing approach. A 10-gallon cooler handles batches up to 10 gallons. For step mashing (multiple temperature rests), a kettle with a heat source and recirculation pump maintains better temperature control than a cooler, but single-infusion mashing in a cooler covers 95% of beer styles.
The false bottom or bazooka screen
A false bottom (slotted stainless disc) or bazooka screen (stainless mesh tube) sits at the bottom of the mash tun and filters grain particles from the wort during lautering. Without a filter, grain would clog the mash tun outlet. A false bottom ($15–25) or bazooka screen ($10–15) is a required component of the mash tun. Both work well for single-infusion mashing; false bottoms provide slightly better lautering clarity on very finely crushed grain.
Hot liquor tank (HLT)
The hot liquor tank holds sparge water at 168–170°F, used to rinse the grain bed after mashing to collect the remaining sugars. Any pot or kettle capable of holding 4–6 gallons serves as an HLT. On a stovetop setup, the HLT shares the stove with the boil kettle, heat the sparge water before the mash, then keep it warm while the mash proceeds. A second propane burner eliminates the timing juggle. The HLT doesn’t need to be fancy, the same stockpot used for extract brewing works perfectly.
Grain mill
Milling grain fresh on brew day is required for all-grain brewing, pre-milled grain loses fermentability within days as the crushed grist oxidizes. A two-roller grain mill (Barleycrusher, Monster Mill MM2) at $60–100 crushes grain to the correct particle size for mash efficiency and lautering. Gap setting matters: too tight and the husks shred (stuck sparge and astringency); too loose and starch conversion is incomplete. Start at 0.039″ gap (factory default on most mills) and adjust based on your efficiency and lautering performance. Many homebrew shops offer grain milling at purchase, a good option for occasional all-grain brewers who don’t want to own a mill.
Boil kettle
For 5-gallon all-grain batches, a 10-gallon kettle provides adequate headspace for a vigorous boil without boilovers. For 10-gallon batches, a 15-gallon kettle. Stainless steel is preferred over aluminum for long-term use, stainless handles harsh cleaners, doesn’t react with acidic wort, and doesn’t require seasoning. A ball valve at the bottom makes wort transfer and cleaning easier. Budget: $80–150 for a quality 10-gallon stainless kettle with thermometer port and ball valve.
Common Questions
What mash efficiency should I expect as a beginner?
New all-grain brewers typically achieve 65–72% mash efficiency in their first batches, compared to the 75% efficiency assumed in most published recipes. This means your actual OG will be lower than the recipe targets until you dial in your system. Common causes of low efficiency: grain crush too coarse (most common), mash temperature too high or too low (reducing enzyme activity), mash too thick or too thin, or poor sparge technique. Measure your pre-boil gravity, compare to recipe targets, and adjust grain mill gap or grain bill weight accordingly. Most brewers reach 72–78% efficiency within 3–5 batches once they’ve calibrated their grain mill gap and mash water chemistry.
