Canning/preserving mushrooms - Ask Extension
I heard that it is possible to preserve nushrooms in olive oil. I tried to do so with the following process:
1. Cleaned/cut mushrooms
2. Boiled them...
Knowledgebase
Canning/preserving mushrooms #873872
Asked June 20, 2024, 12:47 AM EDT
I heard that it is possible to preserve nushrooms in olive oil. I tried to do so with the following process:
1. Cleaned/cut mushrooms
2. Boiled them in a 2:1 water to white vinegar bath for 10 minutes
3. Let them dry overnight on the counter
4. Steralised jars and lids by pressure cooker
5. Added mushrooms and olive oil to jars and tapped to try to release air bubbles
6 Sealed lids and boiled for 20 minutes, which sealed the jars, then cooled on counter overnight
After they came out of the boil, the jars looked beautiful. Then, this morning the oil in both have gone cloudy. Are they safe to ingest still?
Deschutes County Oregon
Expert Response
Hi Dixie. Thanks for contacting Ask Extension. I'm sorry but this recipe is not a safe process. First, let's talk about your canned mushrooms that are not safe to eat and are risky for botulism and then what you CAN DO to safely preserve mushrooms in oil.
It is never safe to can wild mushrooms. Your mushrooms in oil should be not be eaten. Botulism is very painful, requires lengthy, specialized medical treatment and is very expensive. Cases in Oregon in 2015 cost $1.4 to $1.8 million. See the directions for Disposal or Detoxification (you can salvage your jars this way) in Canning Vegetables, page 7.
To make Herbs and Vegetables in Oil read the information and directions and follow the steps in the publication. Because these products must be refrigerated and used within 4 days or frozen you might want to make small batches. You can preserve your wild mushrooms by dehydrating them in an electric dehydrator. Most mushrooms dry very well this way. Then, rehydrate them the day before you want to make your Mushrooms in Oil so they can be thoroughly dried by the next day. Rehydrating doesn't take long (usually less than two hours), so store your rehydrated mushrooms in the refrigerator between some paper towels until ready to make Mushrooms in Oil. Drying and rehydrating directions and tips can be found in Drying Fruits and Vegetables.
If you are interested in an acidified, canned commercial whole mushrooms in oil recipe, we recommend the Marinated Whole Mushroom recipe on page 16 of Pickling Vegetables.
Other safe, up-to-date food preservation recipes can be found at https://beav.es/OSUFoodPreservation .
It is never safe to can wild mushrooms. Your mushrooms in oil should be not be eaten. Botulism is very painful, requires lengthy, specialized medical treatment and is very expensive. Cases in Oregon in 2015 cost $1.4 to $1.8 million. See the directions for Disposal or Detoxification (you can salvage your jars this way) in Canning Vegetables, page 7.
To make Herbs and Vegetables in Oil read the information and directions and follow the steps in the publication. Because these products must be refrigerated and used within 4 days or frozen you might want to make small batches. You can preserve your wild mushrooms by dehydrating them in an electric dehydrator. Most mushrooms dry very well this way. Then, rehydrate them the day before you want to make your Mushrooms in Oil so they can be thoroughly dried by the next day. Rehydrating doesn't take long (usually less than two hours), so store your rehydrated mushrooms in the refrigerator between some paper towels until ready to make Mushrooms in Oil. Drying and rehydrating directions and tips can be found in Drying Fruits and Vegetables.
If you are interested in an acidified, canned commercial whole mushrooms in oil recipe, we recommend the Marinated Whole Mushroom recipe on page 16 of Pickling Vegetables.
Other safe, up-to-date food preservation recipes can be found at https://beav.es/OSUFoodPreservation .
