Mazapan (marzipan)

3 cups whole almonds, blanched and ground
2 cups sugar
1 cup water
2 egg whites, lightly beaten
3-4 Tbsp. powdered sugar
1 tsp. vanilla

In a saucepan, heat water and sugar until sugar dissolves and mixture begins to boil. Let it boil steadily without stirring the temperature reaches 230-234 degrees F on a candy thermometer. Remove from heat and beat until mixture turns slightly cloudy. Stir in ground almonds, egg whites, and vanilla. Cook over gentle heat for 2-3 minutes or until mixture pulls away from sides of pan. Turn mixture onto a surface that has been sprinkled with some of the powdered sugar. Knead the mixture until smooth, working in the rest of the powdered sugar. Pull off pieces and roll into balls or olive-shaped pieces. Wrap in foil or wax paper and store in airtight container.