FermCap, also known as FermCap-S, is an excellent tool for brewers to control their fermentation process and prevent excessive foaming. It is a silicone-based anti-foam agent that helps to reduce the risk of boil-overs during the brewing process. But does FermCap need to be refrigerated? Let's dive into this question.
Firstly, it's important to note that FermCap is a stable product and does not require refrigeration for storage. However, keeping it refrigerated can extend its shelf life and maintain its effectiveness for a longer period. So, while refrigeration is not mandatory, it is recommended to maximize the lifespan of your FermCap.
When it comes to using FermCap during the brewing process, there are two main stages where it can be added – during the boil and in the fermenter. Adding FermCap during the boil helps to prevent excessive foaming and boil-overs, ensuring a smoother brewing process. It is typically added in small amounts, around 2-3 drops per gallon, and should be added early in the boil to allow it to disperse properly.
If you choose to add FermCap during the boil, there is no need to add it again in the fermenter. The FermCap that is added during the boil will carry over into the fermenter and continue to provide its anti-foaming properties. This means you can save on using additional FermCap in the fermenter, which can be beneficial both cost-wise and in terms of maintaining the desired flavor profile of your beer.
However, it's worth noting that using FermCap in the fermenter can have an unintended side effect – it can increase the bitterness of your beer. FermCap can retain some of the hop bitterness, resulting in a slightly more bitter final product. This increase in bitterness is estimated to be around 10% of the original IBU (International Bitterness Units) value. So, if you're aiming for a specific bitterness level in your beer, it's important to take this into consideration when using FermCap in the fermenter.
In terms of storage, it's advisable to keep your FermCap refrigerated when not in use. This helps to preserve its effectiveness and prolong its shelf life. Keeping it in a cool and dark place, away from direct sunlight, is also recommended. Additionally, make sure to seal the container tightly after each use to prevent any potential contamination.
While refrigeration is not mandatory for FermCap, it is recommended to extend its shelf life and maintain its effectiveness. Adding FermCap during the boil eliminates the need for additional use in the fermenter, saving both cost and potential flavor alterations. However, keep in mind that using FermCap in the fermenter can increase the bitterness of your beer. So, if you're aiming for a specific bitterness level, make adjustments accordingly. Remember to always follow the manufacturer's instructions and guidelines for the best results.