To make platter: Trim asparagus. To blanch, bring pot of water to boil and place asparagus in pot 2-3 minutes. While asparagus is cooking, fill large bowl with ice water. After 3 minutes, plunge asparagus in ice bath and let cool.
To soft-boil eggs, bring pot of water to boil. Gently place room temperature eggs in water and simmer 3-4 minutes. Remove eggs with slotted spoon and cool under running water.
Serve asparagus and eggs alongside baby carrots, radishes and little gem lettuce. Drape prosciutto slices over some vegetables and between others.
To make dip: In small bowl, whisk miso, lemon juice and water until smooth. Add yogurt, herbs and salt. Season generously with cracked pepper, to taste; mix and serve with platter.