Seasonal Food.

Seasonal food at this time of year, in Germany, means food like duck and goose and dumplings and rich sauce and red cabbage. (And usually eating way too much. Which happened to me yesterday evening, so my brain is not all awake yet, which means you get a food blog entry.)

Now red cabbage is an interesting thing, because it is called either Blaukraut - blue cabbage - or Rotkraut - red cabbage - here, depending on the region and the regional typical way of preparing it. And both names fit the food, red or blue, because the colourant in the cabbage reacts to acid or alkaline milieu by a colour change. If you prepare it with lots of acid, it turns red. If you prepare it with only very little acid, it will turn purple.

And if you would like to see that for yourself, you can do so here. Or do a picture search for "Blaukraut" and "Rotkraut" and see all those colours!