Frozen Strawberry Lemonade

10 strawberries, hulled and sliced
2/3 cup sugar
4 whole lemons, with rinds cut off
3 cups ice, divided
1 1/2 cups water, divided

Place the strawberries and 1/3 cup of sugar in the blender with 1/2 cup of ice and 1/2 cup of water. Blend until pureed. Pour into the bottom of 4 glasses.

Rinse your blender with water, then add the lemons, remaining sugar, ice, and water. With your blender on variable speed #1, begin blending. Quickly increase the speed then turn the blender to high. Blend until smooth.