Genesis 18:8

butter, and milk Butter (ḥem'ah, LXX βούτυρον) is not what we should call butter, but rather "curds," mentioned here and Judges 5:25, as a cool and refreshing delicacy to be offered to a guest. It is called in the East leben. It is probably this which we find so often mentioned with honey, e.g. 2 Samuel 17:29; Isaiah 7:22. The milk (ḥâlâb) would be the fresh milk of sheep or goats.

they did eat The manifestation of the Deity is here, as in Genesis 19:3, associated with a meal. Cf. Exodus 24:11; Judges 6:19-20. God's Presence may bless the simplest duties of home life.