Celeriac, Potato and Pear Mash

Celeriac, Potato and Pear Mash from Better Homes and Gardens Ingredients: 8 oz Celeriac, peeled and cut into 1 1/2 inch pieces 1 pound potatoes, peeled and cut into 1 1/2 inch pieces 2 cups very ripe pears, peeled and cut into 1 1/2 inch pieces 1/2 cup whipping cream...