4th June. By a hut I saw some black, rough, roundish pieces of pitch-black material. I asked what they were and was told that they were reindeer stomachs turned inside out. They put milk in them during the summer and it then keeps in a dried state until winter when they soften it up with water. Some people use bladders instead. In the mountains they boil the milk together with ‘Acetosa’ [Common Sorrel] and conserve that.