'Unleavened' in the Bible

And Gideon went and prepared {a young goat} and unleavened cakes [from] an ephah of flour; he put meat in a basket, and the broth he put in a pot, and he brought [them] to him under the oak and presented [them].

The angel of God said to him, "Take the meat and the unleavened cakes and put [them] on this rock; pour the broth [over it]." And he did so.

Then the angel of Yahweh reached out the tip of the staff that [was] in his hand, and he touched the meat and the unleavened cakes; and fire went up from the rock and consumed the meat and the unleavened cakes. And the angel of Yahweh went {from his sight}.