Step 1

Set the Sous Vide Precision to 135 degrees.

Step 2

Place berries into a quart sized mason jar and top with vodka, leaving a half inch of space from the top of the jar.

Step 3

Cook for 3 hours.

Step 4

Strain and chill.

Step 5

Combine the vodka, lemon juice, and sugar and pour into a cocktail shaker with ice. Pour into martini glasses and garnish with lemon slices or frozen blackberries.