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,
Soy sauce Some make black bean soy sauce, which is very widely used in Chinese and Oriental cooking as an excellent flavor enhancer. In Thailand, soy sauce is called "sii-íu" (). "Sii-íu kǎao" (, "white soy sauce") is used as regular soy sauce in Thai cuisine, while "sii-íu dam" (, "black soy sauce") is used primarily for colour. Another darker-coloured variety, "sii-íu wǎan" (, "sweet soy sauce") is used for dipping sauces. "Sɔ́ɔt prung rót" (, "seasoning sauce") is also commonly used in modern Thai cuisine. In Vietnam, Chinese-style soy sauce is called "xì dầu" (derived from the Cantonese name 豉油) or