Max Mahoney (Chemistry) and I spent a long day brewing a couple of batches of beer recently. Now familiar with the process and how to execute it in the makerspace, we were able to add lots of variables and processes and gear, building on our experience with Brew Day v2.0, and our original, somewhat less-than-successful Brew Day v1.0.

One of the biggest changes to the process this time around had to do with the water. Specifically, we started with deinonized (DI) water, and Max added various salts to create ideal water, which as I understand it is a big factor in the overall success of the end product.

Water Chemistry

We brewed two batches of beer, and one of kombucha, which we’re fermenting in one of the smaller fermenters.

From Brewer to Fermenter

Testing the pH using one of the new meters.

pH Checking

Improvised wort chiller, until our conterflow setup arrives.

RoboBrews Assemble!

Into the fermenters.

Two Brewers, Two Fermenters

We documented things more completely throughout the process this time. Timing notes are especially important, as we’re still working out how these brew days work as labs and activities. How many simultaneous batches make sense, and how many people can effectively work in the space at the same time.

Captain's Log

Meanwhile, batch the second looks and tastes pretty good, with some distinct and pleasant apricot notes.

The Color of Brew Day the Second

We’ve got both fermenters in The Spider Shed (a former chemical storage building that we’re repurposing as a nanobrewery) hooked up to a heating and cooling system, and they’re happily bubbling away.

Brew Day the Third

We’re still learning so much, and the process is becoming even more interesting. Max is especially stoked about tweaking the water chemistry, and has lots of ideas about wrapping class activities and labs around that process. A couple more days, and we’ll cold crash these batches and keg ’em up!

With some new fermentation science gear on the ground, Max Mahoney (Professor of Chemistry and makerspace champion) and I decided to spend a day brewing a pale ale, following our first brew day some months ago. Brewing is mostly a lot of cleaning…

Cleaner

…and sterilizing…

Purge

…and waiting. Waiting for things to heat up. Waiting for things to cool down.

Soon To Be Pale Ale

Sparging is my special gift.

I, Sparger

After the sparge, we checked the brix with our new brix checker.

Brix Testing

We weren’t even close, but realized that we were sampling from the top, which was largely water from the sparge. After the boil, we took another reading, and we were right where we needed to be.

Not Even Close

Here we’re transferring from the Robobrew to the new Ss Chronical fermenter.

Gravity

The Chronical has a heating element, and we’ve got a chiller on the way. Here Max is setting the fermentation temperature.

The Number of the Beast

The brew complete, we set up a webcam to stream the bubbling so that we could monitor it over the long weekend. So far, so good! It’ll be maybe two weeks until we can sample the outcome.

As part of an effort to integrate biology and biohacking into our makerspace offerings, we’ve been working on a fermentation science initiative, which will hopefully lead to workshops, activities, courses, and certificates. Fermentation science sits at the intersection of a number of disciplines, including Biology, Chemistry, and Nutrition, and with the addition of Internet of Things technologies for monitoring and automation, dovetails nicely with our ongoing aquaponics and smart garden efforts.

We’ve started experimenting with kombucha, with the goal of exploring the kombucha SCOBY as a renewable and novel makerspace material, inspired by Scihouse’s SCOBY leather experiments.

We’ve been fostering some kombucha SCOBYs…

SCOBY!

and eventually grew one out in a small rectangular vessel. We knocked together an acrylic drying rack on the laser cutter, and set the SCOBY to dry.

SCOBY Drying

It’s a little rough, but it is after all a version 1 prototype.

It Rubs The Lotion On Its SCOBY

We’re planning to develop an incubation box so that we can manipulate temperature variables, and have talked about all kinds of basic science sorts of experiments to see how far we can take the material.  We’re also developing workshops around lactic acid fermentation, and have created some nice krauts and ferments over the past month, including this red cabbage. Lots of opportunities to science this up too, and to monitor, tweak, and manipulate variables.

Purple Cabbage Ferment

Our eventual goal is to stand up a brewing program that should integrate nicely with the college’s viticulture efforts. We’ve got some work to do to get that up on wheels, but we’re nibbling around the edges by, for instance, growing hops. We repurposed some scaffolding – most recently the art gallery for our Making Social Change laser cut stencil project – as a hops yard.

Hops Tower

Despite some ups and downs with the automatic watering, one of the plants is flowering! Pro tip: raw hops cones are incredibly bitter.

Hops, Flowering

Stay tuned for Innovation Center Makerspace MicroTechno Brew.

Innovation Center Brew