For the strawberry shake:
1 pint good quality vanilla ice cream
1 cup red berry coulis
For the red berry coulis:
1 cup raspberries
1 cup strawberries, hulled and halved
2 tablespoons sugar
1 tablespoon water
1 teaspoon lemon juice
Hull and thinly slice 4 strawberries, save 4 whole with the stems on, slit halfway up from the bottom and reserved for garnish
Decorate 4 tall glasses or champagne flutes with strawberry slices by pressing one slice at a time against the insides of the glasses from bottom to top.
Freeze the decorated glasses 10 minutes before serving.
Red berry coulis:
In a blender, puree the red coulis ingredients until very smooth. Strain through a fine strainer. Refrigerate until needed. Combine the berry coulis and the ice cream in a food processor. Blend until light and smooth. Pour or spoon the shake into the decorated glasses. Slide one slit strawberry onto the rim of each glass and serve immediately with a tall spoon.