Culture of the United Kingdom fried rice, chips and curry sauce). The earliest recipe for the crisp ("potato chip" in North America) is in English food writer William Kitchiner's 1822 cookbook "The Cook's Oracle". In 1920, Frank Smith of The Smiths Potato Crisps Company Ltd packaged a twist of salt with his crisps in greaseproof paper bags, which were sold around London. In the 1950s, Irish crisps company Tayto developed a technology to add seasoning during manufacture, producing the first seasoned crisps: Cheese & Onion and Salt & Vinegar. The crisp market in the UK is dominated by Walkers, which holds 56 per cent of
PepsiCo syrup. PepsiCo also has formed partnerships with several beverage brands it does not own, in order to distribute or market them with its own brands. As of 2010, its partnerships include: Starbucks (Frappuccino, DoubleShot, and Iced Coffee), Unilever's Lipton brand (Lipton Brisk and Lipton Iced Tea), and Dole (licensed juices and drinks). "Frito-Lay North America", the result of a merger in 1961 between the Frito Company and the H.W. Lay Company, produces the top selling line of snack foods in the U.S. Its main brands in the U.S., Canada, and Mexico and include Lay's and Ruffles potato chips; Doritos tortilla