Nitrate levels in German hops and possible input to the beer

It is well known that hop is a nitrate storing plant and therefore the concentrations are rather high, as shown in the graph below with the data from crop 2013. The various colors stand for different growing regions. Yellow (Spalt), blue (Tettnang), green (Hallertau) and red (Elbe-Saale) are the German growing areas and the US hops are presented in grey. The values vary between 4410 and 9900 mg/kg.

In terms of nitrate levels in beer, we reported already in our newsletter 05/2013 on possible amounts reached by dry hopping. ...

Read the complete article here!