Spread mustard over lamb chops; sprinkle evenly with rosemary. Dredge chops in flour, shaking off excess flour. Pour oil in a large skillet; place over medium-high heat until hot.
Add chops, and cook until browned, turning once. Reduce heat to medium; cover and cook 10 minutes. Turn chops over, and add 1/4 cup dry white wine. Cook ten additional minutes or to desired° F of doneness.
Remove from skillet, and keep warm. Add remaining 3/4 cup wine to pan drippings, stirring to loosen browned particles that cling to bottom. Cook 10 minutes or until liquid is reduced to (about 1 cup), stirring occasionally.
Add whipping cream ; simmer 10 minutes. Season with salt and pepper to taste. Serve sauce with lamb chops.
Servings: 4