Ambrosia

Okay, so, contrary to my other posts, Ambrosia is not a Greek hero. But rather, it is seen as the food of the gods. Its often depicted as giving ageless immortality upon anyone what consumes it. The gods gained it from the doves that carried it up to Olympus, so it may have been believed in Homeric tradition to be a kind of divine exhalation of earth.
 Ambrosia is closely related to another food for the gods, nectar, the two names may well have not originally been distinguished, but in Homers poems, nectar is the drink of the gods, ambrosia the food. With ambrosia, Hera 'cleansed all defilement from her lovely flesh.' It also appears to be the means of which Athena gives the gift of immortality to mortals. Heracles was given ambrosia by Athena, but she refused Tydeus when she discovered him eating human brains. It would seem that those who 'eat' ambrosia have not blood in their veins, but ichor.
 Both the food and the drink of the gods, ambrosia and nectar, are fragrant, and used in perfumes. In the Odyssey, Menelaus and his men disguise themselves as seals in untanned seal skins, 'and the deadly smell of the seal skins vexed us sore, but the goddess saved us, she brought ambrosia and  put it under our nostrils.' In Homer's poems, he speaks of ambrosial raiment, ambrosial locks of hair, and even the god's ambrosial sandals.
 As I have written in my post about Achilles, there is a story that believes his mother, Thetis, anoints the baby hero in ambrosia, and puts him through a fire in an attempt to make her beloved child immortal, but her mortal husband, Peleus, stops her, thus leaving only his heel mortal.