Sweetbread , calf milk , Kalbssog Swiss Milke , Midder or Schweser is linguistically kitchen of the thymus of the calf called. In adult animals, the organ used to develop the immune system recedes. The almost white tissue, which sits in the front area of the chest and weighs around 250 to 300 grams, is one of the most valued offal because of its delicacy and delicate taste .
In preparation, the sweetbreads are soaked in water, scalded with hot water and removed from skin, cartilage and bloody areas. Then let it cool down under slight pressure (for example by using a weighted kitchen board), which prevents it from contracting later. It is also customary to let the sweetbreads steep in salt water for about 20 minutes over low heat before further processing.