Plains Dairy and its hometown, Amarillo, have a lot in common. Both were established to meet the demand for a central entity that could regularly deliver products and services needed by an emerging population of pioneers settling over the Southwest. The Texas Panhandle was raw rangeland when Col. Charles Goodnight drove the first cattle to the famous JA Ranch along Palo Duro Canyon.
In a blender container combine all ingredients, except cinnamon. Blend until smooth, about 20 seconds. Pour into glasses and garnish with a sprinkle of ground cinnamon if desired. Yields approximately 2 1/4 cups. Makes 2 servings.