'Manna' in the Bible

And this bread was named manna by Israel: it was white, like a grain seed, and its taste was like cakes made with honey.

And Moses said to Aaron, Take a pot and put one omer of manna in it, and put it away before the Lord, to be kept for future generations.

And the children of Israel had manna for their food for forty years, till they came to a land with people in it, till they came to the edge of the land of Canaan.