The 'Portal' cake is not a lie ... almost[ Wed, 24 Apr 2013 16:00:14 GMT ]"Portal" fans, rejoice! The cake is no longer a lie, at least if you trust Amazon UK seller "Portal 2," who recently made a new baking kit available under the air-tight moniker "Portal The Cake Mix! Official licensed!" for £11.99 (a little over $18). Despite the cheeky chicanery of this Amazon UK missive, sources at Valve Corporation, which makes "Portal," confirmed that this is indeed a verifiab...