Dough:
In a large bowl, stir shortening and water until shortening is melted. Gradually stir in flour and salt until a very soft dough is formed; cover and refrigerate for 1-1/2 hours.

Filling:
Quarter and thinly slice potatoes and rutabagas; place in a bowl with onions. beef, pork and seasonings. Divide dough into 12 equal portions. On a floured surface, roll out one portion at a time into a 10 inch circle. Mound 1-1/2 cups filling on one half of each circle; dot with one teaspoon of butter. Moisten edges with water; fold dough over filling and press edges with a fork to seal. Place on un-greased baking sheets. Cut several slits in top of pasties. Brush with half and half, bake at 350 deg F for 1 hour or until golden brown. Cool on wire racks. Serve hot or cold. Store in refrigerator.