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,
Tomato sauce purée or fresh tomatoes, roux, garlic, salt, sugar, and pepper. Many times, butter and flour will be listed in the ingredients, but those are only used to make the roux (thickening agent). The most common use of the term tomato sauce in New Zealand and South Africa is to describe a popular, commercially produced condiment that is a type of table sauce, similar to American ketchup but without vinegar, which is typically applied to foods such as meat pies, sausages, other cooked meat (in particular steak), and fish and chips. Tomato-based sauces served with pasta would commonly be referred to