You will get one package containing 3 to 4 grams of dried dye mushroom. Each one will be about 1/4 of what you see in the picture.
This mushroom dyes VERY well, with or without mordant. You only need a little bit for a small batch of wool. After the first dyebath, the mushroom can be used again later for additional dyebaths resulting lighter shades.
Online and printed information varies greatly on the topic of dying with this mushroom. I have personal experience dying with this mushroom and I am very happy with it. I did not use a mordant. It is not colorfast, but the fade is slow and subtle when it does occur.
I dyed with untreated Cotswold wool roving. If you are going to dye with a commercial yarn, you need to treat it to remove the coating so the dye adheres. Never boil your wool in the dyebath. I have found that many sources want a simmering time of 1 hour. This is not necessary. The most I would recommend is 45 minutes. For my own use, I used much less time. Test your yarn at 20 min. and again at 30 min. before doing on to 45 min.
You can get more than one dyebath from this mushroom, depending on the color intensity you want. I got four successive dyebaths out of mine, but they were small batches.
Do not use ammonia to change the pH, it is harsh and can make roving or yarn very coarse.
If you plan to reuse your mushroom after the first dyebath, it can be frozen or dried. This mushroom is versatile in the dyebath, so don't worry about "following the rules." Have fun, and experiment.
This mushroom species is Pycnoporus cinnabarinus. There are many very good online sources to learn more about this mushroom and its use as a dye. I will be happy to answer questions.