Preparation

• Bring a pot of well-salted water to a boil. Add the beans and cook until bright green and just tender, 3 to 4 minutes. Drain and immediately plunge in a large bowl of ice water. Let cool for 3 to 4 minutes. Drain and set aside
• Heat the oil in a large (12-inch) skillet over medium heat. Add the garlic and cook for about 1 minute. Add the tomatoes and vinegar, sprinkle with 1/2 tsp. each salt and pepper, and cook, stirring until the mixture reduces by half, about 2 minutes. Add the beans to the pan and cook until warmed through and coated with the tomato mixture, about 1 minute. Taste the beans and season with salt and pepper if needed; garnish with shavings of Parmigiano-Reggiano if desired. Serve immediately.