Chocaviar 75% & Grappa Koralis First sample Grappa and then taste the Venchi's Chocaviar together with the grappa. You'll notice that the chocolate wonderfully highlights the roasted and smoky scents of this oak-aged spirit. Then taste the Chocaviar on its own to appreciate the nuances range of flavors in this exceptional chocolate .End with a final, palate-cleansing sip of Grappa Koralis on its own.