8	cups	cubed seeded watermelon
¼	cup	sifted powdered sugar
1	can	(6 oz.) frozen lemonade concentrate, thawed and undiluted
		mint sprigs (optional

Place watermelon in a large bowl; cover and freeze.

Place half of frozen watermelon, half of powdered sugar, and half of concentrate in a blender, and process until smooth.

Pour mixture into individual glasses.

Repeat procedure with remaining watermelon, powdered sugar, and concentrate.

Garnish with mint sprigs, if desired

Serve immediately.