Apple

Apples were a common fruit found on Earth. The Doctor, in his fourth incarnation claimed that he dropped apples on Isaac Newton's head. (DW: The Pirate Planet) In his seventh incarnation whilst visiting the Worldsphere the Doctor met a parachute that designed apple trees in its spare time. (NA: The Also People) Following his regeneration into his eleventh self the Doctor thought he wanted an apple but didn't like it. Amy Pond disliked apples when she was young -known as Amelia Pond - until her mother began carving happy faces into them. She gave an apple with a carved happy face on it to the Doctor when he first met her. (DW: The Eleventh Hour)