In a manner that is delightfully fragrant, delicious, or divine; in a way that resembles or befits ambrosia (the mythical food of the gods).
From 'ambrosia' (Greek 'ambrotos,' meaning 'immortal,' the divine food of Greek gods) + '-ally' (adverb-forming suffix). The word traveled from mythology into everyday English to describe exceptionally pleasant sensations.
Poets and food writers still use 'ambrosially' to describe the most exquisite flavors and fragrances—it's a word that lets us compare ordinary tasty things to literal divinity, and somehow that makes a perfect pastry sound transcendent.
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