Casa de Fritos was a pretty neat themed food house in Frontierland.
Sponsored by Frito Lay, the restaurant opened shortly after opening day in August 1955. Fritos continued sponsorship until 1982, when control was shifted to Lawry's (owners of the Disney favorite, Tam 'O Shanter).
Casa De Fritos was a Mexican themed restaurant planned and operated by fairly bland white people. Like much of Southern California fantasy fast-foods including Taco Bell, menu items that just didn't exist in Mexico were offered.
The neatest contraption being the "Ta-Cup"...get it? A taco shell shaped like a cup...THE TA-CUP! Man, why don't we get cool fantasy food like that any more at Disneyland?
This is a mail gift box available to Casa De Frito guests for sharing the bounty back home in 1955
The neat thing is that Casa De Fritos came from an era when corporate sponsorship was logically placed at the park. It does make sense that Frito Lay would feature their famous corn-chips at a Mexican themed restaurant in Frontierland. They knew that their product would receive the best exposure if they absolutely took advantage of the environmental theme.
Well, there's Casa De Fritos! Another fine marriage of theme environment and corporate sponsorship brought to you by Walt Disney!