Refreshing Blueberry Smoothie

I just made this incredibly simple blueberry smoothie with ingredients I had on hand. Amounts are approximate since I wasn't measuring very exactly...

• Frozen Blueberries: 2 1/2 cups
• 1% Milk: 1 1/2 cups
• Lemon zest: 1-2 teaspoons
• Sugar: 1 teaspoon or to taste
• Water (1/2 cup added to get mixture to right consistency)

Place all ingredients in blender and mix until consistency is smooth. Add extra water if needed. In lieu of lemon zest, you may use half the amount of lemon juice, or part of a True Lemon packet. The lemon really brightens the flavor though, so don't skip adding it in one form or another!