Combine first 3 ingredients in a large bowl. Cut shortening into flour mixture with a pastry blender until mixture resembles coarse meal. Add buttermilk, whipping cream, and rosemary, stirring with a fork until all ingredients are moistened. (Dough with be soft.)
Turn dough out onto a generously floured surface; knead 3 or 4 times. Pat or roll dough to 1" thickness; cut with a floured 2" biscuit cutter, and place biscuits 1" apart on ungreased baking sheets.
Bake at 450° for 10 minutes or until lightly browned. Transfer to a wire rack, and cool slightly. Split biscuits with a fork, and fill with warm Fresh Pork Sausage Patties. Serve hot. Garnish, if desired.
Make Ahead: Make the biscuit dough several days in advance, and freeze unbaked biscuits in a single layer on a baking sheet until frozen solid. Transfer to a large zip-top freezer bag. Seal and store in freezer. Arrange frozen biscuits on an ungreased baking sheet. Bake at 425° for 15 minutes or until golden.