Ingredient Equvalent

Onions
1 small = 1/4 cup chopped
1 medium-size = 1/2 chopped
1 large = 1 cup chopped

Celery
1 small rib= 1/4 to 1/2 chopped
1 large rib = 1/2 cup chopped

Bell Peppers
1 medium-size = 1/2 cup chopped
1 large = 3/4 cup chopped

Potatoes
1 medium-size = 1 cup diced
1 large = 1 1/2 cups diced

Tomatoes
1 medium-size = 1 cup chopped

Mushrooms
1/2 pound = 2 1/2 cups chopped

Cheese
4 ounces = 1 cup grated or shredded
1 pound = 4 cups grated or shredded
4 ounces blue or feta = 1/2 cup crushed

Herbs
1 tablespoon chopped fresh = 1 teaspoon dried

Meats and Poultry
1 pound cooked = about 3 cups cubed or diced