3+ hour, 53+ min ago  (113+ words) Voodoo Doughnut is nodding to St. Patrick's Day by debuting the limited-time Shamrock Shake Cheesecake doughnut. It will be available from March 12-17 at participating Voodoo Doughnut locations. The doughnut is shamrock-shaped, filled with seasonal mint cookies-and-cream cheesecake, and coated in…...