Dried stems of Finnish mushroom Cortinarius semisanguineus, 70g.
This amount is enough to dye 100grams of wool orange, and another 100-200grams to yellow. The orange pigments attach first to the yarn and the yellow pigments are left in the second and third bath. If you dye the 70grams of wool (instead of 100grams) in the first bath, you get even darker color.
Premordant yarn with alum (and cream of tartar).
Put mordanted and wet yarn to the bath together with the mushrooms, then heat slowly to 70-80°C and simmer for one hour. Remove yarn from the bath and rinse. Remove pieces of mushrooms from the yarn before rinsing and put them back to the bath.
You can also soak mushrooms overnight, simmer them gently for 30-60 minutes, strain and dye.
These mushrooms are also good for contact dyeing in microwave oven, and dye also silk.
For silk use the same weight of fiber to the mushrooms, to silk they give lighter color than to wool.
For cellulose fibers these mushrooms give pale colors.
Dye with these mushrooms in well ventilated area, do not give them to children. They are not poisonous, but they are harmful if eaten.