Beetroot

Beetroots are crops exclusive to Pocket Edition. Beetroots are not planned to be in the PC edition of Minecraft.

Obtaining
Beetroots are obtained from harvesting a fully grown beetroot seed, which drops both itself and beetroots

As a food
Beetroots can be eaten to restore health.

Breeding mobs
Beetroots can be used to breed pigs by tapping and holding a pig with a beetroot in one's hand. Pigs follow the player if the player is holding a beetroot.

Trivia

 * It is difficult to obtain beetroots due to beetroot seeds having a 1/15 chance of popping from grass when tilled. In a future update there will be an easier way to obtain beetroot seeds (and beetroots).