1 pound of sliced or coarsely chopped white, crimini, portabella or shiitake mushrooms equals about 5 cups lightly packed.

4 ounces oyster mushrooms equals about 1 cup.

4 ounces of trimmed shiitakes yields about 1-1/2 cups sliced or chopped.

1 pound medium-sized (2 to 2 1/4 inches in diameter) white or crimini mushrooms equals about 24 mushrooms.

1 pound portabella mushrooms equals 3 large or 4 to 5 medium caps or 2 large or 3 to 4 medium portabellas with stems.

6 ounces of trimmed portabellas yields about 2-1/4 cups coarsely chopped.