In a stainless shaker, combine the the lime juice, Contreau, Seven Jars Vodka. Add a dash of the strawberry shrub; fill with ice. Shake thoroughly, chilling the mixture. Pour through a strainer into a Martini glass. Take a peel of lemon rind and while squeezing over the top of the cocktail, lightly singe the orange peel. Properly done, this produces a flash of flame (be careful not to burn yourself!) that will impress your friends and certify you in their minds as a highly skilled mixologist! For the less daring, you can substitute a lime wheel for the lemon peel!