Chef Mario Batali's Culinary Road Trip

In Gwyneth's kitchen, healthy cooking has become a way of life. She says her number one favorite appliance is the Gaggenau steamer. "It's kind of an investment, but honestly, it's the best thing that's in my kitchen," she says. "You can make steamed veggies, fish, rice—it's incredible. We reheat food in it so you don't have to zap it in the microwave."

Watch to see Mario and Gwyneth's full list of favorite things in the kitchen.

Gwyneth says she loves to have a glass of wine while she cooks and has found a gizmo that keeps her half-full bottles fresh. "In my house, there's always wine left over," she says. Just place the wine saver on top of the bottle, pump, and the air is sucked out of the bottle. "And then the next day you can have the other half of your bottle of wine," she says.

See how Gwyneth can eat what she wants and stay in shape!