As an experienced sommelier and brewer, I highly advise against using bleach, specifically chlorine bleach, to clean your kegs. While bleach is often seen as a powerful cleaning agent, it can actually be quite damaging to the inside of your keg.
One of the main issues with using chlorine bleach is that it can pit the inside of the keg. Pitting refers to the formation of small holes or depressions on the surface of the metal. This can lead to a variety of problems, such as bacterial growth in the pits, which can contaminate future batches of beer or wine.
Additionally, bleach can leave behind a residue that is difficult to completely remove. Even if you rinse the keg thoroughly, traces of bleach may remain, and this can affect the flavor of your beverages. The residue can also react with any remaining organic matter, such as yeast or sugars, and create off-flavors or aromas.
Furthermore, chlorine bleach can be corrosive to stainless steel, which is a common material used in kegs. Over time, using bleach as a cleaning agent can weaken the metal and potentially lead to leaks or other structural issues with the keg.
So, if bleach is not recommended, what should you use to clean your kegs? There are several safe and effective alternatives available:
1. Alkaline Cleaners: These cleaners are specifically designed for brewery equipment and are effective at removing organic matter and deposits. They are generally non-corrosive and do not leave behind residues. Make sure to follow the manufacturer's instructions for proper use and dosage.
2. Acid Cleaners: Acid-based cleaners can be used to remove mineral deposits, such as beerstone or limescale, from the keg. However, it's important to handle these cleaners with care and ensure they are appropriate for the specific type of metal used in your keg.
3. Hot Water and Detergent: For regular cleaning, using hot water and a mild detergent can be sufficient. This method helps remove any leftover residue or organic matter. Just make sure to rinse the keg thoroughly to remove any detergent remnants.
4. Manual Scrubbing: For stubborn stains or deposits, you may need to manually scrub the keg. Use a soft brush or sponge, along with your chosen cleaning agent, and gently scrub the affected areas. Avoid using abrasive materials that can scratch or damage the keg's surface.
In my personal experience, I have found alkaline cleaners to be highly effective in cleaning kegs. They are gentle on the metal, remove organic matter efficiently, and do not leave behind any unwanted residues. Regular cleaning using the appropriate cleaning agents will help maintain the integrity and cleanliness of your kegs, ensuring the quality of your beverages.
While bleach may seem like a powerful cleaning agent, it is not suitable for cleaning kegs due to its potential to pit the metal, leave residues, and cause corrosion. It is best to opt for specialized brewery cleaners, hot water with detergent, or manual scrubbing to ensure the cleanliness and longevity of your kegs.