mysterio

Recipes 

I have just tested a kegged batch of bitter after 10 days and there is an overpowering medicinal solvent-like TCP odour. I know I've seen this before -- is this an infection?

ajf

Recipes 

Xould be an infection. Could also be excess chlorine.

Try a search for "medicinal smell"

-a.

Sephro

Recipes 

from howtobrew.com

Medicinal
These flavors are often described as mediciney, Band-Aid™ like, or can be spicy like cloves. The cause are various phenols which are initially produced by the yeast. Chlorophenols result from the reaction of chlorine-based sanitizers (bleach) with phenol compounds and have very low taste thresholds. Rinsing with boiled water after sanitizing is the best way to prevent these flavors.

Solvent-like
This group of flavors is very similar to the alcohol and ester flavors, but are harsher to the tongue. These flavors often result from a combination of high fermentation temperatures and oxidation. They can also be leached from cheap plastic brewing equipment or if PVC tubing is used as a lautering manifold material. The solvents in some plastics like PVC can be leached by high temperatures.

http://www.howtobrew.com/section4/chapter21-2.html

__________________
Kegged - Munich ale
Secondary - Rye IPA
Aging – Mead