228. How skins should be dyed purple

Take a skin that has been stripped of hair and properly washed, and for each skin take 5 pounds of nut-gall and 21 pounds [15 lbs, SL] of water and put the skin in it and agitate for a day. After that wash it well, and dry it. Then take Asian alum and put it in hot water. After it has settled, pour off the water and put in warm water again, and agitate it. Put into this composition one or two skins and take them out and wash them at once. Now each skin should have half a pound of vermiculum. This is the first dyeing of them.

Citation Type  Leather Dye Recipe
Citation Year 800