1. Arrange asparagus in a steamer basket over 1/2 inch water in a wok or saucepan, and steam about 2 minutes or just until bright green. Rinse with cold water until completely cool; drain and chill.
2. Combine lemon zest and next 5 ingredients in a small bowl, and stir until smooth. Add sea salt, pepper, and herbs. Chill dressing in an airtight container.
3. Arrange asparagus on a platter, and sprinkle with sea salt and pepper. Drizzle dressing over asparagus, and garnish with additional herbs, if desired.