Spring Green Soup

INGREDIENTS

• 1 cucumber peeled
• 1/2 pound pencil-thin asparagus tough ends trimmed
• 2 cups cold water
• 1/4 pound spinach tough stems removed, rinsed well
• 4 scallions cut into 2-inch lengths
• 1 ripe avocado pitted and peeled
• 1/4 cup fresh mint leaves plus more for garnish
• 2 tablespoons freshly squeezed lemon juice
• 3/4 teaspoon coarse salt
• Freshly ground pepper
• 4 to 6 fresh sorrel leaves for garnish (optional)