raspberry mousse

This was a great recipe. How can you go wrong with Grand Marnier and berries?
I got the recipe from Food & Wine.

INGREDIENTS
1 1/3 cups fresh raspberries (6 ounces), or the same quantity of frozen raspberries, thawed
1/2 cup sugar (I used 1/4 cup)
1 teaspoon fresh-ground black pepper
3 tablespoons Grand Marnier or other orange liqueur
1 1/2 cups heavy cream
1 quart strawberries (1 pound), 4 reserved, the rest hulled and halved

In a small saucepan, combine the raspberries and sugar. Cook over low heat, covered, stirring occasionally, until the berries are soft and the sugar dissolved, 5 to 10 minutes. Strain into a medium bowl, pressing the berries to get all the juice. Stir in the pepper. Chill until completely cold, about 20 minutes. Stir in the Grand Marnier.
In a large bowl, beat the cream just until it holds firm peaks when the beaters are lifted. Fold in the raspberry mixture and the halved strawberries until just combined. Serve in stemmed glasses or bowls, topped with the reserved whole strawberries.