Pesto became a staple in the Ligurian culinary tradition, with each family often featuring its own pesto recipe (with slight differences to the traditional ingredients). This is the main reason why pesto recipes often differ from each other. In 1944, "The New York Times" mentioned an imported canned pesto paste. In 1946, "Sunset" magazine published a pesto recipe by Angelo Pellegrini. Pesto did not become popular in North America until the 1980s and 1990s. Pesto is traditionally prepared in a marble mortar with a wooden pestle. First, garlic and pine nuts are placed in the mortar and reduced to a cream,
Pesto are also traditionally added to the dish, boiled in the same pot in which the pasta has been cooked. Pasta, mixed with pesto, has become a well-known dish in the majority of countries today, with countless recipes being posted online for "pesto pasta". It is sometimes used in minestrone. Pesto is sometimes served with sliced beef tomatoes and sliced boiled potatoes. Pesto comes in a variety of recipes, some traditional and some modern, as the very noun "pesto" is a generic term for anything that is made by pounding. The original "pesto alla genovese", the quintessential pesto recipe, is made