Here's just about every gag food I can think of from the show that could be translated to an edible dish:

• Popplers
• Slurm
• Manwhich
• Glagnar's Human Rinds
• Bachelor Chow
• Bristol Myers Squibb steak (just serve steak tips in some novelty-size pill capsules?)
• FemaSlim (some liquid/gel served in disposable food-grade syringes)
• Soylent drinks
• Coffee served in whale mugs
• Deep-fried icecream sandwich wrapped in frosting and lightly baconed
• Jerked "lower horn"
• "Jamaican" platter: jerked meat of every variety
• "LaBarbara's cooking": comically spicy Caribbean food
• Sterno Nicoise (flambeed ice cream cake with blue frosting, probably a lot of work)
• "Froot" cup with cheese filling
• Molten Boron/Torgo's Executive Powder (I'm thinking serve some spaghetti with red sauce in tin coffee cans with the "Molton Boron" label and the chemical hazard symbol, and Parmesan cheese labeled executive powder)