Tony6Strings said:
Exit, I dry mine the same way. This year I have removed and thrown out the stems, because last year all the fly agaric I picked turned to maggots on the drying plates. I recalled Null saying something about larvae in the stems. So far so good this year, everything has dried, no maggots!!
I dried a couple in the oven as per an idea in this thread. They turned black on the gills while drying. Looks gross! Looks like a rotten brain!!
I will attach a pic of some dried amanitas shortly.
If the gills turn black the mushrooms are getting too hot and getting cooked. You'll probably also notice a bunch of liquid seeping out of the mushies when this happens, which is bad as this will contain a significant amount of the IBO/MUS. If you're drying at the right temperature the gills should turn a pale yellow to golden-brown colour. The red cap will probably darken a bit toward the middle, but it should still remain a dark-red colour.
I've found that drying gills-up and regularly moving the caps around helps prevent cooking, which usually occurs when air/moisture is trapped under the cap, like when you put a lid on a pan. Spacing your caps out also greatly reduces the risk that they'll get too hot in the oven while drying.
With very young bulb-shaped mushroom caps I tend to split them down the middle before drying, because these do have a tendency to trap water and cook themselves no matter how you place them in the oven.
Edit: added some pics, these are all pantherina mushrooms from the same drying, as you can see the results were *ahem* mixed.
Ideally, you'll want all your caps to look like the ones toward the left. Older caps do tend to dry a bit worse than caps that are firm and fresh. They usually end up looking like the one left of center, a bit brownish with more wavy gills.
As you can see in the pic below, the mushroom on the left was not playing the game during the drying process.
From the look of it the bottom half stuck itself to the paper It was drying on and then cooked itself. I still wouldn't throw these out though, I keep these overcooked mushies separate and just use them earlier than the ones that dried out well.