The Sausage Is in the Scramble: 'Nduja Scrambled Eggs

In a medium bowl, use a fork to beat eggs with milk (if using) and salt until homogenous and no visible egg whites remain, about 30 seconds. In a 10-inch nonstick skillet, melt butter over medium-low heat until foaming. Add egg mixture and cook, stirring frequently with a heat-resistant rubber spatula, making sure to scrape bottom and sides of skillet, until eggs begin to thicken and form small curds, 6 to 8 minutes. Continue to cook, stirring vigorously to break up large curds, until eggs are thick enough to hold their shape, 3 to 5 minutes longer. Add 'nduja and stir vigorously until incorporated and emulsified, about 30 seconds. Remove from heat and season with pepper. Divide scrambled eggs between individual serving plates, sprinkle with chives (if using), and serve right away with toasted bread.