1 cup fresh blackberries, or more to taste
5 large strawberries, hulled and halved
1 large banana
1/3 cup orange juice
2 cups crushed ice
1 teaspoon white sugar, or to taste (optional)
12 fresh blackberries
Place 1 cup blackberries, strawberries, banana, orange juice, and ice into a blender in that order, and blend on high speed until smooth, 30 seconds to 1 minute. Pour into 4 glasses and top each serving with 3 blackberries for garnish.