Frozen Mint Lemonade

Bahan-bahan (4 porsi)

• ½ cup fresh lemon juice (about 4 lemons)
• ¾ cup cold water
• ¼ cup lightly packed packed fresh mint (about 4 grams), plus 4 small sprigs to use as garnish
• ¼ cup sugar (I used organic cane sugar)*
• 4 cups ice