Combine on a small plate ground caraway seeds, dried dill and salt. Rim a rocks glass with lemon juice and the caraway-dill rim mixture and fill with ice. Add 1 oz vodka, 1½ oz carrot juice and ½ oz each dry vermouth, mango juice, and lemon juice. Stir and garnish with a small spoonful of prepared horseradish and a carrot ribbon.