For people who don't drink a lot, 5 gallons of failed beer is just too much to drink.  Additionally, when experimenting with recipes, it's nice to be able to test several batches at once to get the mix just right, testing each iteration side by side.

For these cases, it's good to have a quick-and-easy fermenter that's small enough to do quick runs.

Step 1: Collect Components

You probably have all of this in your house.  I did, which is why these were the materials used.

1 - The base of the fermenter is a bottle of soda, any size.  Here we use a 2 liter bottle.
2 - Airlock.  This is a cheapass one from the brewstore.
3 - Plumber's Putty
4 - Hole making tools

TEEHEE!!&nbsp; Maker's Mark!!!!&nbsp; :D<br />
Seriously, not a half hour ago I was pondering the idea of some smaller test bathes, and musing upon a cheap way to run several at once. You read my mind :)<br /> <br /> One suggestion/question if I may. The grommets used on the large plastic bucket fermentors can be had for only a few cents. ( example: http://www.midwestsupplies.com/replacement-rubber-grommet.html ) is there a reason not to use one of those? <br />
I think those would be fine, but I didn't have any.&nbsp; I like to keep the amount of hobby-specific equipment I&nbsp;need to a minimum, so the plumber's putty was 'a good fit', as it were.<br />

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