Soup

Unlike other chicken soups that begin with water, this Mexican version starts with chicken stock; the resulting broth is richer and more complex than for basic chicken soup (page 43), since stock will impart flavor to (and be fortified by) the chicken. To make the soup, a whole chicken is simmered in chicken stock, which is then strained and combined with a fiery puree of dried chiles, charred tomatoes, and sautéed onion and garlic. Before being pureed, the chiles are toasted in a dry skillet to enhance their smokiness, then soaked in water to soften, a process that is widely used in Mexican cooking as a building block for many types of dishes (this is comparable to the way spices are toasted in Indian cooking as a flavor-building component for masalas and curry pastes). What distinguishes tortilla soup is the way it is served, since the garnishes are essential to the overall flavor; plus, they are incorporated at the table—not in the kitchen—so that each guest has a hand in creating and customizing the final dish. The garnishes suggested below are traditional and offer a nice balance of taste and texture, but sliced jalapeños (seeded for less heat) or radishes, diced fresh tomatoes, or other types of cheese (such as queso fresco or queso blanco) are also authentic, as is a dollop of crema (Mexican sour cream) or sour cream.

If soup-making is an indication of a cook’s talents, chicken soup is the truest test, since the soup should ideally offer warmth and nourishment as well as flavor. It is, after all, the ultimate comfort food. Once you’ve committed this basic soup technique to memory, the possibilities for variations—and other meals—are limitless. Making the soup is essentially a form of poaching chicken in an aromatic broth. The chicken should always be just covered with liquid—in this case, water—which should remain at a gentle simmer. Skimming the surface is critical to the soup’s success, since the impurities from the chicken would cause the broth to become cloudy. Straining out the aromatics will also help produce a cleaner broth; the vegetables will have become very soft and lost much of their individual flavors by this time, so it is necessary to replenish them with “garnish” vegetables, added at the end. The variations below provide flavorful alternatives to the basic soup recipe—one with matzo balls and the other with springtime vegetables, including green beans, peas, and watercress.

The first lesson in stock making is also the simplest: everything (bones and aromatics) is covered in a pot with water and gently simmered, yielding a stock with a pure, clean flavor. This technique can be applied to making stock with chicken, meat, fish, or only vegetables. Of these, no stock is more versatile and flexible than white chicken stock, which is flavorful but not overpowering, lending itself to a vast array of uses: white sauces, such as velouté; any number of soups (it is the default choice for many); and many stews and braises, among other dishes where there are layers of flavor (think risotto). White beef stock is equally classic, and a better option in dishes such as Wine-Braised Short Ribs (page 188). For this stock, there are several ways to alter the outcome, depending on how it will be used. The longer the stock simmers, the stronger it will taste. Simmer for 1 1/2 hours for vegetable soups or other delicate dishes (including white sauces), longer for more robust sauces and soups. To give the stock a more pronounced chicken flavor, add 1 1/2 pounds chicken thighs along with the other parts (take them out of the pot as soon as they are done if you plan to reserve the meat for another purpose, returning bones to pot after removing meat).

You can purchase a whole roast duck at your local Chinese restaurant. Some varieties of noodles suggest soaking them in boiling water instead of cooking them; check your package instructions before preparing them.

If you want to make the dish in advance, prepare the chicken and sauce through step 2. Let cool completely, then cover and refrigerate overnight. Rewarm gently before proceeding.

Similar greens—such as yow choy, also known as choy sum (which looks almost identical to bok choy but bears small yellow flowers), broccolini, or even regular broccoli—will work well in this dish if you can’t find Chinese broccoli. You can buy wide rice noodles at Asian grocery stores, or use the narrow rice noodles (often labeled “pad thai noodles”) that many supermarkets carry.

Some varieties of noodles suggest soaking them in boiling water instead of cooking them; check your package instructions before preparing them.

You can substitute eight small artichokes for the baby artichokes: Prepare them as directed below, removing all but the tender inner leaves and scooping out the choke. Adjust the cooking time accordingly. Fan leaves of artichoke hearts, and place one in each bowl.

This traditional Scottish soup is made with chicken stock, leeks, and potatoes. If you make this soup ahead, you may need to add a bit of water or stock when reheating it.

Martha served this gazpacho over tomato aspic in a glass as a portable first course, but the gazpacho can also be served on its own.