A Singular Drink
Riddle: I am a drink that cannot be backwards. What am I?
Answer: "Tonic" - Reasoning: Simply put, the riddle does not give you much. Backwards is the key, which suggests the reader look at something in reverse, namely the word "cannot". Cannot backwards spells "tonnac", which when read aloud sounds extremely close to "tonic".
Source: https://www.riddles.com/7443
