Off flavor, result of high fermentation temp?

[PTBYOOJ]

Brewed a batch of red ale, came out tasty, totally drinkable but with a slight off taste and more prominent off smell. Best described as bananaish and yeasty.

I had a difficult time keeping the beer under 70F while brewing because of climate and poor house insulation issues.

I was wondering if high fermentation temperatures could be a reason for the off flavors, or if I did something else incorrectly.

Thanks,

 

[PoppinCaps]

Sounds like high temp problems. What strain did you use?

 

[PTBYOOJ]

Muntons dry ale yeast

 

[CAustin919]

The warmer fermentation temps *could* have lead to ester production. Esters can described as banana-ish. Esterification can be favorable in some styles.

Could possibly be due to underpitching that particular yeast strain, or a combo of both.

So it's not an "end of the world" kinda thing.. It just may not fit the style that you brewed.

http://www.winning-homebrew.com/esters.html