To make 5 gallons of mash, you will need to calculate the amount of grain required based on a ratio of 2.25 pounds per gallon.
First, determine the total weight of grain needed by multiplying the ratio by the total volume of the mash. In this case, 2.25 pounds/gallon x 5 gallons = 11.25 pounds of grain.
Since you mentioned using coarse ground grain, make sure you have a suitable grinder to achieve the desired consistency. Grinding the grain too fine can lead to extraction difficulties and affect the overall quality of the mash.
Once you have the grain ready, you will need to decide on the mashing process. Fermenting on the grain and squeezing it out afterwards is known as a “no-sparge” or “brew in a bag” method. This technique can simplify the process and save time, but it's important to ensure proper extraction and efficiency.
To start, heat water to the desired mash temperature, typically around 150-160°F (65-71°C). The amount of water used will depend on your desired mash thickness or consistency. Generally, a ratio of 1.5-2 quarts of water per pound of grain is common.
Once the water reaches the desired temperature, add the grain to the mash tun or pot and mix thoroughly to ensure even temperature distribution. It's important to monitor and maintain the mash temperature within the desired range for enzyme activity to convert starches to fermentable sugars.
Cover the mash tun or pot and let it rest for approximately 60-90 minutes, allowing enough time for enzymatic conversion to occur. During this time, you can periodically check the temperature and stir the mash gently to ensure uniformity.
After the mash rest period, it's time to extract the sugars from the grain. In a “no-sparge” method, you can simply lift the grain bag or use a strainer to separate the liquid (wort) from the spent grain. Be cautious when handling hot liquid and use appropriate equipment to avoid burns.
Once the wort is separated from the grain, you can proceed with boiling and adding hops if desired, then cool the wort and transfer it to the fermentation vessel. Pitch your chosen yeast and proceed with fermentation according to your recipe or desired outcome.
Remember to keep a close eye on fermentation temperature, as it plays a crucial role in yeast activity and flavor development.
In summary, to make 5 gallons of mash using a ratio of 2.25 pounds of grain per gallon, you will need approximately 11.25 pounds of coarse ground grain. Ferment on the grain and squeeze out the liquid when done. Pay attention to the mash temperature, extraction process, and fermentation conditions to achieve the desired results in your final product.