Excellent smoothie: yogurt, grapes, and bananas

This smoothie was phenomenal! Excellent flavor and very nice creamy texture. My mom invented this smoothie.

Ingredients:
• 1 cup of frozen black/purple grapes (frozen in our freezer; harvested from our garden, this year)
• 4 ripe bananas with black spots (frozen in our freezer; purchased from the grocery store)
• Karoun whole milk plain yogurt (fill up the rest of the blender with it; I think our blender holds 7 cups)

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