Traditionally served with marinated cooked veal (vitello tonnato), this versatile sauce from the Piedmont region of Italy is deliciously flavorful and pairs well with veal, turkey, or pork. It also makes a great dip for fresh veggies or savory spread on sandwiches. You can also thin it out a bit and use it as a creamy salad dressing. Traditionally egg yokes are used to create a creamy mayonnaisey sauce, but this version, adapted from Bon Appetit, uses mayonnaise in place of egg yolks without losing the briny creaminess of the sauce. Serve as an elegant dinner with Stuffed Pork Loin Roast, or as a light lunch/picnic with cold thinly sliced roast pork or turkey and a green salad.