
Banana tea is a non-alcoholic drink of banana infused with tea — sweet and fruity.
Strong tea with banana syrup rebuilds it, or with a ripe banana muddled in and strained. Banana syrup alone gives the fruit and skips the tannin, which is most of what the tea was doing.
Banana syrup
A sweet concentrate with no tea in it at all. It is one of the two parts of banana tea, not a stand-in for the pair — on its own it sweetens a drink and gives it no body.
Banana liqueur
Alcoholic and much sweeter; in an alcohol-free drink it defeats the purpose; elsewhere it needs the sugar accounted for.
Brewed, it keeps a day or two in the fridge and grows more tannic as it stands. Over-steeping the tea makes it bitter, and no amount of banana covers that.