Tag Archives: yeast

September Meeting

Our September meeting will be hosted by Matt D. at his place in Somerville on Wednesday evening, September 27. We will have a special guest lecture by Kate Steblenko, Beer Scientist at Jack’s Abby, on the topic of quality control in brewing – “When Good Bugs Go Bad: Detection of Beer Spoiling Microorganisms in a Mixed Fermentation Environment“.

Bring homebrew, especially mixed or wild ferments and those with unexpected flavors (good or bad). If you are not a club member, but would like to attend, get in touch using our contact form.

Stir Plate for Homebrew Yeast Starters


Contributed by Anthony Lopez.

Disclaimer: DO NOT WORK ON LIVE CIRCUITS. Your power supply should not be plugged in until you have completed the construction of this SPECIFIC build CORRECTLY. Electricity can kill you, regardless of the voltage applied.

Your “Cheap and Easy” Stir Plate:


  • I used a 6 volt Cell Phone charger as my power supply. Most of us probably have gone through a few cell phones over the last couple years, and just about any one should work in the 5-12 volt DC range. (They are all DC current)
  • 4 inch computer fan. Mine was 12 volts DC.
  • hard drive magnets. I only used one. You can also buy rare earth magnets online from a number of vendors. Neodymium magnets are cheap retail if you can’t find an old hard drive to scrap.
  • 2 inch diameter steel washer.
  • Some scrap wire will be helpful, however we’ll only need about a foot of black and red wire.

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