Salami-and-Egg Mishmash

Heat the canola oil in a large nonstick skillet. Add the sliced onion and cook over moderately high heat, stirring, until softened, about 5 minutes. Add the salami strips and cook, stirring occasionally, until lightly browned, about 2 minutes. Add the watercress and cook until just wilted, about 1 minute. Add the eggs, season with salt and pepper and cook, stirring gently, until the eggs are softly set, about 2 minutes longer. Transfer the mishmash to plates and serve right away with rye toast.