Foods to eat on the winter solstice in Japan

Since ancient times it has been said, in Japan, that eating foods with two or more "ん" in them on the winter solstice will improve your luck and ensure good health. 

For this reason, the Tokyo Kamaboko Seafood Processing Industry Cooperative, created an "hanpen day はんぺんの日" on the winter solstice, to try and promote hanpen, an unique Japanese food. But there are plenty more foods with two or more "ん" (n) in them. Instantly, ninjin which means carrot, and renkon come to mind. 

But its not just foods with 2+ 'n' that are recommended for the winter solstice. There is also a long standing tradition of eating 

pumpkin on the winter solstice so that you will not catch a cold. In some areas it is believed that eating red bean porridge on the winter solstice wards off evil spirits. Some people also believe that eating konnyaku on the winter solstice, cleanses the body of bad things. 

Do you eat any of these foods on the winter solstice? Do you know of any others in your region?