Cidery tone appearing in blonde ale again... not sugar.

[battwave]

I've had a second occurrence in a year of an initially tasty blonde AG ale taking-on a cidery tone after a couple of months. There are a number of common factors in the recipes as follows:

1 - Both fermented with S04 (but i've used in other brews without any problem)

2 - Both use an aroma/flavouring hop for bittering (goldings and cascade respectively)

3 - Both use lager malt

4 - Both have a very small addition (1%) of pale chocolate malt


Can anyone see anything that I'm missing please? :pray:

 

[Wendy1971]

when you say blond was it lager?

 

[battwave]

Thanks for responding wendy1971. No, it's definitely an ale, fermented with S04 at around 20 degrees.

What were you thinking?