Manna: What is it?
Manna has been called the “bread of angels”. It appeared in the morning on the ground, as if coming down from the sky. According to the Bible, God provided manna for the Israelites during their travels in the desert after they escaped Egypt.
In the description in the Book of Exodus, manna is described as being “a fine, flake-like thing” like the frost on the ground. It is described in the Book of Numbers as arriving with the dew during the night. Exodus adds that manna was comparable to hoarfrost in size, similarly had to be collected before it was melted by the heat of the sun and was white like coriander seed in color.
Numbers describes it as having the appearance of bdellium, adding that the Israelites ground it and pounded it into cakes, which were then baked, resulting in something that tasted like cakes baked with oil. Exodus states that raw manna tasted like wafers that had been made with honey. – from Wikipedia