Craig and I went to a home brew day for newbies a few weeks back. We learned a lot of new tricks and helpful hints. The one that got my attention, that I’d like to share with you, is the "brew in a bag" method that has gained some popularity with all grain brewers on a budget. Being the adventurers we are we decided while we are waiting for our supplies for our custom mash tun to arrive, why not try this method out? After stopping by Siciliano's Market in Grand Rapids and grabbing up our list of ingredients we set out for the lake shore with high hopes for our new found method of grain mashing.
Basically from my understanding the "brew in a bag" method utilizes a steeping process for extracting the needed sugars from the grain rather than commonly filtering mash water through the grain bed. Keep in mind, I view this method as a very affordable way to try all grain brewing but not very efficient. Grain brewing is a longer process by far and does require a bit more work.
Supply List for grain brew step:
· Grains for Mash
· Mash Tun – we used a 48 quart Beverage cooler with a bulk head valve for easy liquid transfer…we are waiting on our screen/bed-filter to complete our basic mash system
· Sanitizer
· Warm Water
· Stir paddle
· Thermometer
The Process: First, sanitize anything that will come in contact with the young beer/wort. We started with warm water (3 gallons) about 155 degrees F in a 48 quart Coleman cooler. Mash water can vary in temp. Recommendations depend on the type of grain that you are extracting sugars from. For this recipe we were looking for around 155 degrees and the cooler drops about 5 degrees every 45 minutes so we will add some additional warm water about half way through the mashing process to keep the desired temp.
After putting all the grain in cheese cloth bags and placing them in to the cooler of warm water, stir it around a bit to make sure everything is uniform and let steep for around 40 minutes. At the 40 minute markers I checked the temp and it was sitting around 149 as expected. I then added some additional hot water to the mash (around 1 1/2 gallons) to hopefully bring the temp back in range and let it steep for an additional 50 minutes with a temp at around 157 degrees.
I tried to take a gravity reading for preboil and there was a lot shrapnel floating in the liquid. Therefore, the readings were inaccurate and frankly all over the place. If I was to use this method again, I would definitely consider filtering some of the debris out to get better gravity readings or using a finer mesh bag.
I pulled the grain bags out of the mash water and used an additional Gallon of warm water to rinse the remaining sugars from the grain bag and disposed of them. This method did work relatively well as far as holding the desired temp range.
Now if you have brewed a beer ingredient kit that comes with directions, you are currently at the boil step in the directions. You have basically made your own malt extract with this process and can initially follow the same steps from here on depending on the beer style your making. I recommend making your first batch from a kit so that you can get an idea of the entire process and make your desired changes from there.
For some of our more advanced followers, you may be sitting there trying not to pull your hair out and stab your keyboard furiously. I am aware that I have not covered ph levels or any type of water conditioning for that matter. I would like to note this is a very basic/cheap alternative to the extract brewing process for new brewers and I feel water conditioning is not a big concern for the newbies. I used tap water, as our local supply has suitable water specifications for the amateur brewer. I will add a post with explanations and advantages to conditioning water at a later time.
A Side Note:
If you’re in the west Michigan area looking for a good place for helpful brewing advice and a fantastic place to acquire everything needed to brew your own beer. Siciliano's market (http://www.sicilianosmkt.com/ ) Grand Rapids is outstanding. The staff is always helpful with ideas and alternatives if you can’t find exactly what you’re looking for.
As always... please share your input on the subject!