For the Northern Ireland-based firm, see Tayto (Northern Ireland) Tayto's a major Irish crisps and popcorn manufacturer, credited with having developed cheese and onion crisps in 1954, having developed the technology to flavour crisps in the process. Ownership The company's owned by Largo Foods. Previously owned by Cantrell & Cochrane, they were based in Coolock, County Dublin, until their factory was closed in September 2005, when production was outsourced to Largo. Largo bought the brand in… (More on Tayto)