cholesteraunt
a dining establishment that serves fatty foods under the guise of 'hearty, healthy, American cooking'. This could also qualify a buffet, although would not include a 'pay by plate' style of buffet.
"Biggie Smalls dined at cholesteraunts....you could tell because when he came out with a new rap song, he sounded as if he had jelly doughnut throat. It was almost as if he'd acquire athersclerosis at any moment!"