Cool completely in pan on a rack, about 2 hours. A good tip for chopping Baker's chocolate is to chop each ounce on the unwrapped paper it comes in. Use the paper to transfer the chopped chocolate to the double boiler. Grease foil and dust with flour. Tap out any excess flour onto a sheet of newspaper and discard.
Measure sugars onto a sheet of wax paper.
Coarsely chop pecans and set aside in measuring cup. Measure flour and set aside. Set a rack at middle level of oven and preheat to 350 degrees. Whisk eggs in large bowl. Vigorously whisk in salt, sugars, and extracts.