Banana in beer? Oh yes, it’s possible. It's not that we put real bananas in the beer; it's a natural ester called ‘iso-amyl acetate’ which is produced by the yeast and is a byproduct of the fermentation process. Let me introduce our new recipe, the 340 Dunkelweizen. A mahogany-coloured weizen beer with a subdued banana aroma and light caramel taste. It is my first recipe since starting here so I am very excited about it because it is also the first time we are using reused ye