Salmon Egg Wrap : 1/2cup sour cream, 2 teaspoons fresh lemon juice, 1/4 cup olive oil, 1 tablespoon finely chopped fresh chives, 1/2 tablespoon chopped fresh tarragon, 1/2 teaspoon kosher salt, 1 small red onion, thinly sliced, 2 ripe california avocados, 1 to 2 tablespoons fresh lemon juice.