Feel free to use any fresh sausage of your choice. Swiss chard comes in a rainbow of coloured stems. Any colour can be used and once cooked its flavour is similar to a mild spinach.
Twisting the bacon into long breadstick shaped strips makes lots of pockets for the spiced brown sugar to hide and caramelize. Yum! Bacon can also be baked flat if preferred.
These little fellows of Finnish descent puff up in the oven just like a Yorkshire pudding. Once they fall, load them up with fresh berries. Alternatively you can make one large krupso in a 9- x 13-inch cake pan.