New Revised Standard Version
When the layer of dew lifted, there on the surface of the wilderness was a fine flaky substance, as fine as frost on the ground.

Contemporary English Version
After the dew had gone, the desert was covered with thin flakes that looked like frost.

New American Bible
and when the layer of dew evaporated, fine flakes were on the surface of the wilderness, fine flakes like hoarfrost on the ground.

Douay-Rheims Bible
And when it had covered the face of the earth, it appeared in the wilderness small, and as it were beaten with a pestle, like unto the hoar frost on the ground.

And when it had covered the face of the earth, it appeared in the wilderness small, and as it were beaten with a pestle, like unto the hoar frost on the ground.

the dew

Numbers 11:7-9 Now the manna was like coriander seed, of the colour of bdellium. . . .

Deuteronomy 8:3 He afflicted thee with want, and gave thee manna for thy food, which neither thou nor thy fathers knew: to shew that not in bread alone doth man live, but in every word that proceedeth from the mouth of God.

Nehemiah 9:15 And thou gavest them bread from heaven in their hunger, and broughtest forth water for them out of the rock in their thirst, and thou saidst to them that they should go in, and possess the land, upon which thou hadst lifted up thy hand to give it them.

Psalm 78:24 And had rained down manna upon them to eat, and had given them the bread of heaven.

Psalm 105:40 They asked, and the quail came: and he filled them with the bread of heaven.

the hoar frost

Psalm 147:16 Who giveth snow like wool: scattereth mists like ashes.