Sarah continues exploring the Christmas market in Karlsruhe. She visits the talking "fairy tale boxes," the ice skating rink, and a stand where they make crêpes with Nutella!

Sarah shows us around Karlsruhe's "Christkindlesmarkt" Christmas Market, which has three areas. She stops at various stands to buy a gingerbread heart, a mulled wine, and some alcohol-free children's punch.

Although it might help with fighting age-related diseases in the future, research into calorie restriction and aging is not so far along – or free of contradictions – that we should factor it into our dietary choices.

Could eating less help us look younger, and more importantly, could it help us live longer? A few studies seem to show that this could be the case, but there are no conclusive results yet.

Cettina and Sarah cook a very traditional Bavarian meal: pretzels made from scratch with sausages.

Besides Oktoberfest, what else do you know about Bavaria? Cettina and Sarah go through the geography, history, and other facts related to Germany's largest federal state.

Cettina and Sarah prepare a typical dish from the region of Swabia. Maultaschen are like German ravioli, and are served either fried or in broth.

Cettina and Sara talk about Baden-Württemberg, a federal state in the south of Germany that has a number of defining geographical features and cultural hallmarks.

This video may seem to be directed purely at meat eaters, Kopps Restaurant and Grill takes it all the way to vegan! Secret tip: even Hamburger Heaven on Graefestr. in Berlin-Kreuzberg has delicious veggie burgers in addition to their free-range and organic beef. Guten Appetit! (video copyright dpa)

Join Marko for dinner as he enjoys potato soup, Swabian Maultaschen, and a good beer at restaurant in Berlin.