Squishee

The long-running television animation The Simpsons has featured a number of fictional products, sometimes spoofs of real-life products, that have subsequently been recreated by real world companies attempting to exploit the popularity of The Simpsons. In 2007, as part of a "reverse product placement" marketing campaign for The Simpsons Movie, real life versions of a number of Simpsons products were sold in 7-Eleven stores. Real cans of Buzz Cola, boxes of Krusty-O's cereal, Squishees, and a special edition (#711) of the Radioactive Man Comic were all sold in stores alongside other The Simpsons merchandise.

Khlav Khalash is a foreign food sold throughout the United States. The food has been seen two times in the series, once in New York City and once in Springfield's Russian District

Khlav Khalash was first mentioned in The City of New York vs. Homer Simpson. Khlav Khalash was then seen sold outside the World Trade Center.

Khlav Khalash is sold in a food cart. Khlav Khalash is some sort of grilled meat on a stick. There are two choices of drink with the product: Mountain Dew or Crab Juice.

Buzz Cola is a brand of cola, and an officially licensed product of Twentieth Century Fox. Its slogan is "twice the sugar, twice the caffeine". The slogan is a parody of the former Jolt Cola slogan "all the sugar and twice the caffeine". A prior slogan used was "There's a little boogie in every bottle (can)".

Sometimes Buzz Cola is used for making a statement of the advertising industry. In "E-I-E-I-(Annoyed Grunt)" (season 11, 1999) the Simpson family is at the movies watching the ads. Here they watch an Allied Forces soldier storm the Normandy beaches and charge a German. The German falls to the ground dead and the Allied soldier reaches for a can of Buzz Cola in his belt pocket. A voice over then says "Buzz Cola: The taste you kill for!" and then the German comes alive again to say "Available in ze lobby". Jonathan Grey writes in his book Watching With The Simpsons that "the cola ad, for instance, scorns the proclivity of ads to use any gimmick to grasp attention, regardless of ethics".

...
Wikipedia