Wash all the berries. Remove the tops of the strawberries and cut into slices.
Add all the fruit to the pitcher, along with a few sprigs of fresh mint.
Add two cups of rum, the bottle of rosé, and a can of cranberry seltzer.
Stir to mix all the ingredients together and refrigerate for about an hour.
When ready to serve, pour in a glass over ice and garnish with a strawberry slice.