Key Lime Fudge

Key Lime Fudge:
YIELD: 1 pound

1 (5 oz.) can evaporated milk
1 2/3 C sugar
1/2 tsp. salt
12 large marshmallows
2 C white chocolate chips
1/4 cup lime rind, grated (about 4 limes)(lime zest is what this is calling for)
2 Tbsp. key lime juice (I used the juice from the limes I zested so they wouldn't go to waste)

Line and 8x8 pan with foil and grease the foil with butter. Combine milk, sugar and salt in a large, heavy saucepan and cook over medium heat until mixture comes to a boil, stirring constantly. Once mixture begins to boil, cook for 8 minutes, stirring constantly (use soft ball stage method here). Remove from heat and stir in marshmallows, chocolate, lime zest and lime juice, mixing well until everything is melted and smooth. Pour into prepared pan and cool completely. Cut into 1" squares to serve