Rimuru states that as Slime he never gains weight due to his limitless stomach, so he is free to eat or drink as much he likes. This perfectly suits Rimuru as though he has no need to consume food, there is nothing this Slime loves more than to chow down on his favourite meals. Rimuru has a preference for traditional Japanese cuisine and his favourite food is Yakiniku. He also loves Tempura and Takoyaki referring to them as his "friends". Rimuru also makes sure to remind his subordinates that he takes the cultivation of Rice VERY seriously. However, Rimuru also loves Western Cuisine with a particular fondness for Spaghetti, Pizza and occasionally Potato Crisps/Chips. What excellent taste he has!
Rimuru is forever polite even when eating, always using his cutlery and eating all of his vegetables. Rimuru particularly loves Natto! This doesn't stop Gobta teasing him about his voracious appetite, however, whenever Rimuru goes back for seconds which always earns the goblin a swift kick to the stomach.
Rimuru enjoying his all time favourite, Yakiniku
Rimuru can always count on a carrot!
A Potato Chip off the old block!
He can't get enough of those Stretch-ay Slime-ay Rotten Beans!