Pesto been used for all sorts of cold sauces or dips, mostly without any of the original ingredients: arugula (instead of or in addition to basil), black olives, lemon peel, coriander, or mushrooms. In more northern countries, ramson leaves are sometimes used instead of basil. In the 19th century, Genovese immigrants to Argentina brought pesto recipes with them. A Peruvian variety, known as "tallarines verdes" (meaning "green noodles", from Italian "tagliarini"), is slightly creamier, lacks pine nuts (because of their rarity and prohibitive cost in Peru), may use spinach and vegetable oil (in place of olive oil), and is sometimes served
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