In a large bowl, sift together flour, baking soda and salt and set aside.
In a separate bowl, mix together the melted butter, brown sugar and white sugar until very well blended, about two to three minutes. The mixture will seem a bit dry. Beat in the vanilla and eggs until mixture is light and creamy.
Combine wet and dry ingredients, along with chocolate chips, chunks and grated chocolate, until well combined, but do not over mix. Cover mixture (with plastic wrap or liand chill in refrigerator for at least 12 hours and up to 48 hours. Chilling the dough is absolutely necessary when working with the melted butter, given it time to solidify and for the flavors to all come together.
When ready to bake, preheat oven to 325 degrees Drop cookie dough in large (approximately 1/4 cuscoopfuls, onto a non-stick cookie sheet, or cookie sheet covered with a silicone baking mat or parchment paper, leaving at least 3" between cookies. Bake for approximately 15-18 minutes, or until edges are just lightly starting to brown. Centers will still seem somewhat underdone. Let cool on baking sheet for at least 15 minutes, as the cookies will finish baking from heat on baking sheet.
Transfer to a wire rack to cool completely, then store in an airtight container.
Makes approximately 18 extra large cookies or 36 standard size cookies.