In the ancient Greek myths, ambrosia is the food or drink of the Greek gods, and is often depicted as conferring longevity or immortality upon whoever consumed it. It was brought to the gods in Olympu
The Food of the Gods on Olympus (1530), majolica dish attributed to Nicola da Urbino
Thetis anoints Achilles with ambrosia, by Johann Balthasar Probst (1673–1748)
Lycurgus attacking the nymph Ambrosia (mosaic from Herculaneum, 45–79 AD)
Nectar is a viscous, sugar-rich liquid produced by plants in glands called nectaries, either within the flowers with which it attracts pollinating animals, or by extrafloral nectaries, which provide a
Ambrosia
…Ancient art sometimes depicted ambrosia as distributed by the nymph named Ambrosia, a nurse of Dionysus. Ambrosia is very closely related to nectar, the Greek gods' other form of sustenance. The two terms may not have originally been distinguished from each other. For example, in Homer's poems…
Orange-yellow nectaries and greenish nectar in buckwheat flowers
An Australian painted lady feeding on a flower's nectar
Gymnadenia conopsea flowers with nectar-filled spur