Leicester storey of Walker's Oxford Street factory in Leicester. In the early days the potatoes were sliced by hand and cooked in an ordinary fish and chip fryer. In 1971 the Walker's crisps business was sold to Standard Brands, an American firm, who sold on the company to Frito-Lay. Walker's crisps makes 10 million bags of crisps per day at two factories in Beaumont Leys, and is the UK's largest grocery brand. The Beaumont Leys manufacturing plant is world's largest crisp factory. Meanwhile, the sausage and pie business was bought out by Samworth Brothers in 1986. Production outgrew the Cobden Street
Natural history in the Spanish New World In his analysis of the plant, he suggested that over time “it may be shown by experience or reports from physicians whether it might be beneficial for other things”. This assumption on the part of Villasante that knowledge about the plant “was cumulative and would be based on the experience of physicians” was based upon the model set down by the Casa de la Contratacion and was the common approach to knowledge production in New World natural history. The idea of developing knowledge over time through continued experimentation and subsequent corrections to information later found to be erroneous was considered