1/2 cup sugar
3 cups miniature marshmallows
2/3 cup purchased eggnog
3 tablespoons butter
1 tablespoon corn syrup
1/8 teaspoon salt
1 cup semi-sweet chocolate chips
Butter the sides of a heavy 3-quart saucepan. Add sugar, marshmallows, eggnog, butter, corn syrup and salt to the saucepan. Cook over low heat, stirring constantly, until sugar is dissolved. Turn heat to medium and cook until mixture boils.
Continue to cook, stirring constantly, to about 232 degrees. Add chocolate chips and continue to cook for 5 minutes or until chocolate is melted (should be at soft ball stage*). Pour into a buttered 8-inch square pan. Cool to room temperature, then cut.
*Soft ball stage is when a small amount of syrup dropped into chilled water forms a ball, but flattens when picked up with fingers (234 degrees to 240 degrees).