For the last posting of the Lunar New Year, here’s a
technique to quickly rehydrate dried Shiitake mushrooms. In my recipes using
dried Shiitake mushrooms, the instructions usually call for soaking in water
that has been boiled for at least one hour. This is usually not a problem if
you’ve been planning to make a dish ahead of time, but is a problem when you
decide at the last minute that you need rehydrated Shiitake mushrooms. That’s
exactly what happened to me, I needed rehydrated Shiitake mushrooms at the last
minute and had to figure out how to quickly do this. So the technique that I
came up with is to boil the mushrooms in the microwave after pouring boiling
water over them.
I found that it is important to not fill the bowl with the
dried mushrooms completely with boiling water. Leave a space of about 1-inch
(2.5 cm.) from the top because the water foams once it reboils in the microwave.
So the timing (at least for my microwave) is to turn the microwave on high for
1 minute to reboil the liquid in the bowl, and then use 50% power for another 4
minutes to rehydrate the mushrooms. Once removed from the microwave, the bowl is
refilled to the top with more water since the mushroom rehydration liquid is
usually used later in the recipe needing the mushrooms. So for the time it
takes to boil water plus 5 minutes (rather than one hour), the mushrooms are
ready for use.
Enjoy!