1 c. cornstarch
1 1/4 c. cold water
2 c. baking soda (1 lb.)

Stir starch and soda together. Mix in cold water and stir over heat until mixture has a consistency of mashed potatoes. Turn onto a plate and cover with a damp cloth until cool enough to handle. Then knead. Use immediately or store in an airtight container. This dough has a smooth consistency good for ornaments, modeling or pottery. Dries at room temperature in 3 days or oven at 200 degrees.