First, you will need to make a syrup, so mix 150grams(3/4 cup) of sugar with 200ml(1 cup) of water into a sauce pan. Bring to boil, steering constantly until the sugar dissolves. When done, cool the syrup in the refrigerator.
Put the syrup, 100g(1/2cup) of freshly squeezed lemon juice, 3 cups of water and 1 teaspoon cannabis tincture into a pitcher and stir until the syrup dissolves. Serve over ice cubes and fresh mint leaves.