Lembas, from the
Sindarin lenn for '
journey' and
mbass for '
bread.'
The waybread of the Elves, formed into thin cakes, each of which was enough for a day's journey. Lembas remained fresh for many days if kept unbroken in its leaf wrapping. Unlike cram, lembas was tasty.
Called in Quenya coimas.
One of the tastiest things a Nethack character can have a snackerel of, though it originates from the LoTR.