01 - Combine strawberries, blueberries, raspberries, blackberries, apple juice, Greek yogurt, honey, lemon juice, lemon zest, vanilla extract, and salt in a blender. Blend until completely smooth.
02 - Taste the blended mixture and adjust honey or maple syrup as desired for preferred sweetness level.
03 - Transfer the soup to a bowl and refrigerate for at least 1 hour before serving.
04 - Pour the chilled berry soup into serving bowls. Garnish each portion with a sprinkle of crisp granola and fresh mint leaves. Serve immediately.