Wash and hull strawberries.
Sprinkle with 2 tablespoons Cointreau for each pint of berries and let stand 1 to 2 hours.
Thaw raspberries slightly, then whirl on high in blender about 1/2 minute. (Or force through food mill.)
Strain through fine sieve to remove seeds and serve as a sauce for strawberries.
Makes 6 to 8 servings.