If ye have tasted (ei egeusasthe). Condition of first class with ei and first aorist middle indicative of geuō in figurative sense as in Heb 6:4. “A taste excites the appetite” (Bengel).
Gracious (chrēstos). Quotation from Psa 34:8. The Hebrew for the lxx chrēstos is simply tobh (good). Plato used the word for food also, and Peter carries out the metaphor in gala (milk) as in Luk 5:39.