Freezing Mushrooms

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As part of the No Spend Days I have added into my Year Of Buying Nothing challenge for this year, I wanted to give freezing mushrooms a try. I have never frozen mushrooms before, but I have become a lot more creative in the freezing things department since our deep freeze arrived.

I freeze a lot of fruit which gets used in protein shakes plus espresso coffee shots, most of our meat is purchased in bulk and frozen, sometimes for up to 6 months if the deal is a good one. I even freeze watermelon rinds for the chooks to enjoy on a hot day.

Sometimes these challenges can actually create super awesomeness. If I could manage to freeze the mushrooms, I could do a big bulk cook up every so often, whack them in the freezer, and every Thursday take out a packet for use on Friday. If I can do it in one hit, on a day that is not Friday, while listening to music or a podcast, and then have mushrooms for 2 months.. Wow that would be so great! Even greater would be if I can stock up when they are on special.

I have been pre-cooking my mushrooms for our weekly pizza for some years now, after one of my home made pizzas became very soggy and waterlogged due to mushroom moisture. There is a LOT of moisture in mushrooms.

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How much moisture? I had two punnets of 375g bbq flat mushrooms from Aldi. I prepared them and cooked them in the oven. I then weighed them to find I now had 375g total of mushrooms – I had lost an entire 375g in the cooking process!

Mushroom preparation has been the annoying part of my Fridays for a long time now, and sometimes an annoying part of Thursday or Wednesday or whatever day I remembered that I needed to get fresh mushrooms for Friday and would head off to the supermarket *just* to get mushrooms. And while I was there, I would tend to buy other things – maybe things we did need like milk or vegetables, and sometimes things we did not need.

The part I least like is having to rinse them before chopping, but they do grow in soil and manure, so that is always going to be something I do, to satisfy my germophobic brain.

So I knew the moisture factor could be a problem when it came to freezing them. I did some reading and found that pre-cooking was recommended before freezing, so I just followed my normal steps –

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rinse mushrooms, chop & lay them out on baking paper on a tray, cook for 12 minutes @ 200C (395F)

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then blot with paper towel to remove excess moisture, and lay out on paper towel to drain.

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Normally this is where the mushroom meets the pizza base. But not today. Today we have some new steps. Foodsave the mushrooms, then place them in the freezer. There is still quite a bit of moisture in these mushrooms even after cooking and draining, and that is the brown liquid you see in the next photo – which was taken after the mushrooms have been frozen.

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The foodsaver is the best thing we ever bought, it saves us enormous amounts of money because I can buy food when it is on extreme special and when I freeze it I never have to worry about freezer burn.

Then on Thursday night, I take the mushrooms out of the freezer and place them in the fridge to defrost. On Friday when it is time to build the pizza, I open the packet and place them on some paper towel to drain – as there will still be some mushroom moisture trapped inside the packet.

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This process is 100% a keeper for me. I tried two different types of mushroom – Aldi calls them “whole” and “bbq flat”. The next time mushrooms are on special, I will buy up and freeze. And now I am thinking of other things I can bulk prepare and freeze – capsicum is next on our list, just last night I froze some leeks.

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Every week I make pizza and it is the best pizza I have ever made, since last week. This time was no exception to the rule. I use the Aldi pizza bases, topped with pizza sauce, pizza cheese, mushrooms, olives, pineapple, capsicum, feta cheese, ham, bacon, pepperoni, more cheese, then an egg is poured over the top.

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It was just far easier, having done the mushroom preparation a couple of weeks beforehand.

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6 thoughts on “Freezing Mushrooms

  1. My vegetarian son is leaving on Friday to go to Ballarat for uni, so I’ll no longer be buying mushrooms in a box. He goes through heaps of them. I’m going to try this, just for pizzas. Thanks.

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