Put the ice in the bowl and set aside. Reserve a handful of the chopped chocolate , and melt the rest gently in a stainless steel bowl set over simmering water until it reaches 115 degrees F on a digital thermometer.
Remove the bowl from the heat. Wipe the bottom of the bowl with a dry cloth to prevent water from splashing onto the work surface. Sprinkle the reserved chocolate into the melted chocolate by placing over the bowl of ice for a few seconds at a time, removing it, stirring until smooth, and repeating until the temperature drops to 82 degrees F.
Heat the chocolate again by placing the chocolate bowl back over the simmering water for 30 seconds to 1 minute at a time. Once its temperature rises to 90 degrees F, the chocolate is ready to use. Careful not to go over 92 degrees, because then you have to start all over. Pour it into the chocolate mold, making sure each cavity is filled.
Invert the mold and allow the chocolate to drip back into the bowl. Invert the mold again, and allow the thin coating of chocolate to harden. Try to keep the remaining chocolate at 90 degrees.
Prepare the filling, and fill each cavity up not quite to the rim. Then top with the remaining tempered chocolate and allow to set.