1. Bring a large saucepan of water to a boil and generously salt it. Add the asparagus and cook until bright green and crisp-tender, about 3 minutes. Drain, rinse under cold water until cool, and drain again.

2. Meanwhile, in a small bowl, whisk the vinegar, mustard, sugar, and a pinch each of salt and pepper until the sugar dissolves. Whisk in the oil until smooth. Drizzle over the asparagus, then grate the eggs with a zester on the fine holes of a box grater over the asparagus.