An extract of the Yummy Yummy Cooking Jam review by WiiWare World:
"The main premise of Yummy Yummy Cooking Jam revolves around food preparation inside various eateries. The game basically features four different restaurants, each serving its own unique type of food, including Hot Dogs, Hamburgers, Pizza and Mexican Food. You'll start the game making Hot Dogs which feature simple core ingredients and you'll also be dealing with extremely tolerant customers. Once you've completed the necessary four rounds at the Hot Dog restaurant you'll then move on to the more difficult foods that feature far more ingredients and an increasingly impatient customer base.
The object of the game is simple. You're given a time limit and your goal is to accumulate a certain amount of tip money in order to progress to the next round. The better your food and the faster your service, the better the tips. As your customers enter the restaurant you'll have to use the Wii Remote to hand out menus to each person at the table. After a short peruse of the menu, your customers will begin giving you their orders which you have to follow exactly in order to win their approval, and ultimately their tip. While this is a very simple task in the first level, you'll soon find yourself getting bombarded with more tasks and more complicated orders. Some items you can put together with very little effort, like placing a wiener on a hot dog bun, but soon you'll have to start cutting up ingredients, warming buns, and dispensing a wide variety of condiments in order to get each order to your customer's liking. In later levels the game will even throw a few annoyances your way, one being the bothersome flies that you'll have to swat from time to time. As the game intensifies, you'll find your task getting much more complicated as your progress through the game."