Although it is not common to send a Purim gift that is dairy, this fudge is just too good not to post. If it's PC in your community to send dairy items, try it and wrap each piece individually in tissue with decorative ribbons on both ends. If dairy Shaloch Manot are not for you, save this one to your recipe box  and make it for Shavuos.
Makes 8 dozen pieces
12 ounces bittersweet or semisweet chocolate, finely chopped
2 cups toasted walnut, pecan, macadamia, or other nuts, chopped, optional
10 tablespoons unsalted butter, at room temperature
1 tablespoon pure vanilla extract
20 large marshmallows
4 cups sugar
2 (5-ounce) cans evaporated milk
Combine the chocolate pieces, nuts (if using), butter, and vanilla in a large heatproof bowl. Set aside.
Place the marshmallows, sugar, and evaporated milk in a heavy-bottomed saucepan over medium heat. Stirring constantly, bring to a boil. Continuing to stir, boil for exactly 6 minutes.
Remove from the heat and immediately pour the marshmallow mixture into the chocolate mixture; beat constantly until creamy. Quickly pour into the prepared pan or platter, pushing slightly with the back of a wooden spoon to spread the fudge evenly.
Cool for at least 1 hour before cutting into pieces. Serve at room temperature.