a crust forms

Examples (10)

• If you leave the gravy to cool, a thin crust forms on the surface.
• A hard, black crust formed over the molten rock as the lava cooled.
• After the freezing rain, a delicate crust of ice had formed on the snow.
• Put a lid on the paint can, or a crust will form on top.
• A golden-brown crust forms on the casserole as it bakes in the oven.
• Over time, a salty crust formed around the edge of the container.
• Look, a crust has already formed on the pudding I made this morning.
• Stir the soup occasionally so that a crust doesn't form.
• When the muddy field dried under the sun, a cracked crust formed on the ground.
• The process is complete when a solid crust forms at the bottom of the beaker.