Combine the berries, the raspberry (or strawberry liqueur), the agave (if using) and the Moscato wine. Chill for 1 to 3 hours.

Before serving, add ice and seltzer to taste!

Notes: The sangria improves as it chills in the fridge. However, if you don't want your berries to be soft, just chill the Moscato, the liqueur and the seltzer separately and toss everything together with the fresh berries right before serving.