Step 1

Place strawberries, raspberries, lemon juice, and sugar in a sauce pan and heat over high heat until boiling. Reduce heat to low boil/high simmer and allow to simmer for 5-8 minutes, until mixture becomes syrupy. Stir occasionally. Berries should be pretty much liquified.

Step 2

Strain mixture well through fine mesh strainer, pressing syrup out of berries. Allow berry syrup to cool at least 30 minutes or overnight in the fridge.

Step 3

When ready to serve, pour seltzer water and vodka into a gallon pitcher, add 2-3 cups of ice and stir.

Step 4

Pour berry syrup into pitcher and stir well. Serve over ice.

Step 5

Garnish with berries, lemon slices, or mint sprigs.