Choose spears that are smooth and vibrant, with trim, tight tips.
Heat grill or a grill pan until medium hot. Snap off and discard the tough ends of the asparagus. Place asparagus in a bowl. Drizzle oil over asparagus; season with salt and pepper. Grill, turning every few minutes, until tender, about 12 minutes. Garnish with pea shoots, if desired; serve with vinaigrette.