Weekender
pfm Member
https://www.whiskyadvocate.com/taste-banana-flavors-in-whisky/Banana flavour is dominated by an ester, which one I forget. See also pear drops (ethyl ethanoate) etc. Esters are formed from alcohols and acids, they are very common in alcoholic drinks.
Edit: isoamyl ethanoate, aka isoamyl acetate.
This made me feel slightly better about my palate since I do get banana on bourbon but have not had Irish* nor Japanese...I exclude Nikka From the Barrel as it is largely Ben Nevis.
*several waiting to be opened.