Small round shapes that look like pellets that can be made of ceramic or metal which are used when baking an unfilled pie or tart to keep it from shrinking.
Depending the size of the dish, the weights vary from 1-2 cups and are poured into a foil-lined unbaked pie crust.
The shell is partially baked, the foil and weights are removed and then baked till finished.
Making a pie ? Pie Making Equipment