Hanson's Boysenberry Vodka & Kollar Chocolate Truffles - Sonoma Tasting Room Enjoy our special Valentine’s Week pairings of our limited edition organic Boysenberry Vodka Cocktails paired with four decadently delicious chocolate truffles from Napa’s award-winning artisan chocolatier, Kollar Chocolates. Sample Kollar truffle flavors include Passion Fruit, Fennel Pollen, Habanero, and l’Orange. Chris Kollar was recently selected as one of the Top 10 Chocolatiers of North America.