Ingredients for 2 servings

1 grapefruit, peeled, seeds removed (reserve juice)
1 large ripe banana, previously sliced and frozen
1 large sweet apple, cored and skin removed
2 cups spinach
2-3 ice cubes
Unsweetened almond milk, water or orange juice to thin (~½ cup)
½ tsp fresh ginger, peeled and chopped (optional)

Directions

Add all ingredients to a blender (including reserved grapefruit juice) and blend until creamy and smooth. Add more liquid if too thick, ice to thicken, and banana or apple to sweeten.