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How to Make a Randall With a Water Filter Housing

Posted on February 10, 2011 by Daniel 3 Comments

Dogfish Head’s New Randall the Enamel Animal

The Randall was first pioneered by the ever-innovative Dogfish Head Brewery in Maryland. Sam Calagione, Dogfish Head’s founder and president, was looking for a way to make his brutally-bitter 120 Minute IPA even more hoppy at an event called the “Lupulin Slam” in 2002 (lupulin is a bitter powder found on hop plants).

Sam built a makeshift water filter and filled it with Cascade and Willamette hops before sending the 120 Minute IPA through it. Hopheads at the event were stunned at how fresh and resinous the beer’s hop presence was, even if it did seem like it could strip the enamel off of your teeth. Thus “Randall the Enamel Animal” was born.

These days, brewers and homebrewers alike fill Randalls and water filters with much more than just hops. Some common Randall fillers include coffee or vanilla beans, bourbon-soaked oak, fresh fruit, candy canes and jalapeno peppers.

Don’t worry: if you can’t afford Dogfish Head’s Randall the Enamel Animal at $375, you can make your own Randall beer filter out of a water filter housing for a fraction of the price.

How to Make a Randall the Enamel Animal:

1. Find an appropriate water filter housing. A standard 10″ water filter housing should work for most applications. You’ll probably want to go with a clear water filter housing, so that you can see whatever ingredients you stuff in it. Since most beer lines are 1/4″, it would make since to find a filter housing that could accommodate 1/4″ lines (rather than using bungs to convert the fittings). Popular outlet sizings on these housings include 1/4″, 1/2″ and 3/4″. Just make sure it either matches the size of your existing line, that you have the appropriate fittings to convert it. The Pentek 158117 Filter Housing is a popular, economical choice.

2. Make a stainless-steel filter replacement. Since a true water filter would diminish the flow you need to move beer through the filter, you’ll want to construct a piece of stainless steel to stand in for the filter. You can drill holes through it to allow for a good flow. Most standard 10″ water filters measure around 2 1/2″ x 9 3/4″.

3. Assemble fittings, tubing, disconnects and other assorted hardware. HopWild gives a good run-down of the various hardware you’ll need to build the Randall, and walks you through the necessary steps.

If you liked this post, be sure to come back to read about which water filters to use for homebrewing. If you have any questions about which filter housings would be appropriate, feel free to leave a comment below.

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Posted in DIY/Maintenance Tagged dogfish head randall, dogfish head randall the enamel animal, homebrew randall, how to build a randall, how to make a randall, randall beer filter, randall water filter, water filter housing 3 Comments

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