The phrase "banana flavor" refers to the taste or smell that is associated with bananas. It is used to describe something that tastes or smells like bananas. Full definition
This banana bread is full of banana flavor in every bite, it tastes amazing! (melaniecooks.com)
I would have liked a little more banana flavor in the banana bread, but it was light and moist which gives it some serious thumbs up. (glutenfreemaui.com)
I've found that if they're really ripe, the bars come out so rich with banana flavor and definitely sweet enough. (beamingbanana.com)