The reaction of a carboxylic acid and an alcohol produces an ester and water. The reaction is catalyzed with acid.
Esters often have a fruity taste or odor.
Octyl acetate, prepared using octanol as the alcohol, will remind you of oranges. You will prepare a compound which smells like bananas. Swirl the flask and carefully add 4 mL of conc. Cool to room temperature. Separate the lower aqueous layer.