Lemon

Lemons were a citrus fruit on Earth. The planet Oroobia had the general scent of lemons when the Tenth Doctor and Donna Noble visited. (PROSE: The Doctor Trap)

The fruit, juice and peel of the lemon was used in foods and drinks. Lemon juice was often used to flavour tea and was preferred by Skullions to water as water "burned" them. (TV: The Man Who Never Was) Lemon peel was one of the ingredients in Kaiser pudding. (TV: The Enemy of the World)

The Doctor
The Third Doctor preferred lime to lemon in his Bombay Sapphire Gin when he drank with Iris Wildthyme. (PROSE: Verdigris)

The Doctor's TARDIS had lemon trees in the library. (AUDIO: The Settling)

The Eighth Doctor took his darjeeling tea with lemon. (PROSE: Fallen Gods)

There was a planet that the Tenth Doctor considered amazing, where lemons evolved into people and lived a harmonious existence with a breed of hyper-intelligent bee. (PROSE: Keeping up with the Joneses)

Behind the scenes

 * A lemon Jelly baby collectible card is one of 50 collectible cards released as part of The Adventure Games.