Finely chop the dark and white chocolate separately. In a medium bowl, microwave half of the dark chocolate at 50 percent power in 30-second intervals, stirring between intervals, until melted, about 2 minutes. Add the remaining dark chocolate and stir until completely melted. Repeat with the white chocolate in a separate bowl. Using a silicone or offset spatula, spread the dark chocolate evenly (about 1/4 inch thick) onto a parchment paper-lined baking sheet. Drop dollops of the white chocolate on top of the dark. Using the tip of a knife or skewer, swirl the white into the dark. Sprinkle with the pistachios, dried fruit, and coconut chips. Chill until set, about 30 minutes. Cut into irregular pieces.
The Do's and Don'ts of Cooking with Chocolate
