Exodus 16:11-14

Then the LORD said to Moses, “I have heard the Israelites’ complaints. Now tell them, ‘In the evening you will have meat to eat, and in the morning you will have all the bread you want. Then you will know that I am the LORD your God.’” That evening vast numbers of quail flew in and covered the camp. And the next morning the area around the camp was wet with dew. When the dew evaporated, a flaky substance as fine as frost blanketed the ground.