No flavor?

[bjsmith93]

Hi guys, Ive been reading for a long time here and recently built a still. Yesterday i ran a pineapple wash and im running a banana wash right now. Neither one really tastes like anything but alcohol. For the pineapple i bought cans of crushed pineapple, totalling about a a pound of sugar which i boiled with 9 pounds of sugar and added to a 5 gallon bucket. The banana i used a little shy of 30 lbs and 5 lbs of sugar. Im getting a high alcohol content 50%-75%, just not any flavor. Did i do something wrong?