Cooking Mama on Wii (2008) is strictly single-player. One Wii Remote. No second player support. No co-op. No versus. The sequel Cooking Mama 2: World Kitchen (2009) is also single-player only.
Use it for:
One remote for Cooking Mama. Two for Cook Off or World Kitchen. Check the box art—multiplayer games advertise "2 Players" prominently.