From Kerbal Space Program Wiki
Sean's Cannery is the manufacturer of the first lander can.
|“||Many question the reasoning behind Sean's Cannery's -known for their very excellent canned foods products- incursion into the aerospace engineering world. Despite the criticism, none can dispute that their flagship product, the Lander Can Mk1 Cockpit, has proven itself many times over as a reliable and perhaps not surprisingly, one of the most air-tight crew carrying modules available today. Lander Can crews often praise the module for its ability to keep stowed snacks crisp and fresh, and complain of how on other pods they become mushy after just a few days into the mission.||”|