Mastering flavorful sauces is the easiest way to add some oomph to your usual dinners. You’re probably familiar with pesto, an Italian sauce that can be made with all sorts of fresh herbs, and then used to make your meals shine. Homemade salad dressings deliver extra flavor to everything from tasty Mediterranean bowls to fried chicken. But you should also add Argentinean chimichurri to your repertoire — it’s a vinegary sauce made from herbs including parsley, oregano, and cilantro, and bold i...