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How to Make Mushroom Stock from Kitchen Scraps

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How to Make Mushroom Stock from Kitchen Scraps
You know what they say about assuming, right?

Yeah.

So sometimes I assume that if I can find an ingredient at the grocery store here, everyone else can easily find that ingredient too. But it’s not always true! And I’ve had a few people ask me about mushroom stock. I always buy cartons of it and I figured that they sold them everywhere. Well, I guess not.

Oops.

Since I did a post on how to make your own vegetable broth from kitchen scraps last month, I thought I’d do a post about how to make mushroom stock this month. So now all your broth and stock needs are covered! Mushroom stock is a great staple to keep on hand if you don’t eat meat–the deep, rich flavor and color makes it a great substitute for beef stock.

Like vegetable broth, most mushroom stock recipes call for lots of fresh mushrooms and vegetables. Some of them even use dried mushrooms too. And I am way way way too cheap to buy expensive dried mushrooms just to make stock. Even the fresh mushrooms add up in cost if you’re using more than just the white variety. So I set out to come up with a mushroom stock recipe that, like vegetable broth, used kitchen scraps. Cheap! No waste!

Frozen Mushroom & Veggie Scraps
So if you have your freezer bag started for vegetable broth, you’ll want to start another freezer bag for scraps to use to make mushroom stock. And now, whenever you make something with mushrooms, instead of trimming the stems, pop them off and put them in the freezer bag. The more kinds of mushroom stems you have, the better–I used white, cremini, portabella, and shiitake mushrooms in this batch of stock. (Bonus: Pulling off the stems instead of cutting the ends off will help you save on prep time too.) Leek trimmings, skins and trimmings from onions and shallots, carrot peels and trimmings, and leaves and ends of celery can be added to the bag too. But make sure your bag consists of about half mushrooms. (This is mushroom stock, after all!) Oh, and everything you put in the bag should be clean–nothing dirty, nothing rotten, nothing moldy.

When you’re ready to make your stock, combine the frozen scraps with double the amount of water in a large Dutch oven or stockpot. So if you have 4 cups of scraps, add 8 cups of water. You can also add a minced clove of garlic or two, a bay leaf, springs of parsley, thyme, or sage, and even some fresh veggies if you like. A splash of red wine is a nice addition too. If you want to make the stock into mushroom broth, just season it to taste with some salt and pepper when it’s done cooking. Easy!

How to Make Mushroom Stock from Kitchen Scraps
Bring the mushroom stock to a boil and then let it simmer partially covered on low heat for 45 minutes. After 45 minutes, uncover the pot and let it simmer for 30 minutes more. Let the stock cool and then pour it into a bowl through a fine mesh strainer. Use a wooden spoon to press the vegetables against the strainer in order to extract as much stock as possible. You can use the stock immediately, keep it in the fridge for about a week, or freeze it for a few months.

Frozen Mushroom Stock
I like freezing mine flat in freezer bags. (Need some freezer labels so you remember what you have frozen and when it needs to be used by? Oh, we have some!) You can stack them in your freezer and they’ll take up a minimal amount of space. When you’re ready to use the stock, let it thaw in the fridge for about a day.

This post was originally published on February 5, 2013.

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Kitchen Scrap Mushroom Stock

Mushroom Stock from Kitchen Scraps Recipe

I hate wasting perfectly good vegetables to make mushroom stock–using kitchen scraps is a cheaper, less wasteful alternative!

  • Cook Time: 1 hour 15 minutes
  • Total Time: 1 hour 15 minutes

Ingredients

  • 2 c. frozen mushroom stems
  • 2 c. frozen vegetable scraps (onion and shallot skins, carrot and celery trimmings, etc.)
  • 3 sprigs parsley
  • 1 garlic clove, minced
  • 1 bay leaf
  • 8 c. water

Instructions

  1. Combine all ingredients in large Dutch oven or stock pot. Bring to a boil, then reduce heat to low. Simmer partially covered for 45 minutes; remove lid and simmer uncovered for 30 minutes more. Allow stock to cool, then pour through a fine mesh strainer into a bowl. Press vegetable scraps against the strainer with a wooden spoon in order to extract as much stock as possible. Discard solids and store stock in a plastic container or freezer bag.

Notes

If you want to make broth rather than stock, simply season the stock with salt and pepper to taste after it’s done cooking.

Nutrition

  • Serving Size: about 6 cups of broth

About

Kiersten is the founder and editor of Oh My Veggies.


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CAULIFLOWER BOLOGNESE

“I want you to come watch the movie with us ON the couch, not be in the kitchen!”

I’ve been filling out this one-question-a-day journals for moms that I received for Christmas. It records a little thought or memory over the last year, and then starts again, so you can see how your answers change over a few years. One of the recent ones, prompted me to jot notes about what I am learning as a mom, and I found the question so general I was basically annoyed. I am a romantic, and also wildly pragmatic. In the span of a day I can tear up over the depths of love I feel for my kids, and also wish for them to have a mute button. We all have worlds within us; mothering pushing me into the corners of myself I am sometimes proud of or other corners ashamed of, but am I learning? Yes, every single day. Sometimes in the moment and other times after a particular season. But in 2021, my answer in the bullet journal was that I see my kids are wanting me to play with them. They aren’t registering all the service and shuttling and laundry and what it takes to pull off a week, they just want to play WITH me. It’s natural for me to move within lists and tasks and responsibilities and hustling, but playing is something I have to pay attention to. For them and for me. We usually do a family movie on Friday nights and my son (6.5), see quote above, pointed out that I don’t actually watch the movie, I tinker in the kitchen and he wants me in the couch cuddle. Flattered, and found out that I’d rather make granola than watch The Croods 🙂 So from annoyed, to passing on the question to fellow parents, what are you learning? Try not to be annoyed. Maybe circle back to it.

I published this recipe over on SKCC a few weeks ago and wanted it to live here. We’re trying to find more family-friendly vegetarian recipes (it’s easy for me to fill up on roasted veggies and big salads, not so much for the kids). This batch lasts us two meals – once with noodles, maybe half zoodles, and the second round on toast or english muffins with cheese melted on top, like a pizza sort of thing? It freezes well and is great to deliver to new parents.

CAULIFLOWER BOLOGNESE

Serves 6

Ingredients

2 Tbsp. of extra virgin olive oil
1 small yellow onion – roughly chopped
3 cloves of garlic
sea salt to taste
pepper to taste
1 head of cauliflower (about ¾ lb. or 12 oz. riced)
1/2 cup of raw walnuts pieces
1/2 tsp. of Italian seasoning
1/2 tsp. of fennel seeds – crushed
2 Tbsp. of tomato paste
2 Tbsp. of balsamic vinegar
1/2 cup of red wine (or broth of any sort, and double the vinegar to mimic the wine’s acidity)
28 oz. of canned, crushed tomatoes
1/2 cup of red lentils
red pepper flake to taste

For serving

12 oz. of pasta or choice, zoodles, etc.
parmesan
fresh, torn basil

Directions

In a large Dutch-oven or stockpot, heat the olive oil over medium low heat.

In a food processor, pulse the onion and garlic into smaller bits. Add them to the pot with a big pinch of salt and pepper. Sauté to soften, about 3 minutes.

Pulse up the cauliflower florets to get a rice-like texture. Add the riced-cauliflower to the pot and sauté to soften, about 5 minutes.

Pulse the walnuts in the processor and add those to the pot along with the Italian seasoning, fennel seed, another few generous pinches of salt and pepper, tomato paste and balsamic vinegar. Sauté until fragrant.

Add the red wine, cook about 3 minutes, then add the crushed tomatoes, ½ cup water, lentils, pinch of pepper flakes and stir to combine. Turn the heat to low, put the cover ajar and let it simmer gently for 30-35 minutes. Turn off the heat, taste for seasoning and adjust.

Cook your pasta or zoodles according to instructions. Top with cauli Bolognese, grated cheese, fresh basil and enjoy!

The Bolognese will keep in the fridge for a week and can be frozen for a few months.

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