You may remember that the previous Cooking Mama game for the Wii was nearly a port of the DS title. It was functional but definitely lacked a level of intuitiveness and precision that was necessary for that set up.
This time around the developers have gone for an all motion controlled style of gameplay. The idea is to make it easier for anyone to get into the game. So instead of using the hand cursor to grab the handle on the meat grinder and rotate it, players will just make the circular motion and the character on screen (a new unnamed boy cooking apprentice with emo hair) will do the motion.