Mushroom FAQs

Neither. Mushrooms are fungi, which are so distinct in nature that they are classified as their own kingdom – separate from plants or animals. While commonly placed in the vegetable category for dietary recommendations, mushrooms are, however, not a vegetable based on their cellular organization and composition, such as chitin and ergosterol.

Mushrooms are grown in nearly every state. However, Pennsylvania accounts for approximately 60 percent of total U.S. mushroom production.

Mushrooms are grown and harvested year-round.

Yes. According to the FDA, you should “wash all produce thoroughly under running water before preparing and/or eating, including produce grown at home or bought from a grocery store or farmers' market.”

All mushrooms contain some vitamin D1, but mushrooms have the unique ability to increase vitamin D amounts due to UV-light or sunlight exposure. Please see our Varieties and Benefits and Nutrients pages for information about individual varieties’ vitamin D content.

Long celebrated as a superfood source of powerful nutrients, fresh mushrooms are a healthy addition to your plate. They are fat-free, low-calorie, nutrient-dense, low in sodium, and contain natural antioxidants. For more nutrition information, please visit our Nutrition pages.

All types of processed and fresh mushrooms you purchase in supermarkets are grown and harvested inside climate-controlled buildings.

Mushrooms are a healthy food choice. They contain vitamins A and B and are the only produce item that naturally produces vitamin D. They also contain potassium and other essential micronutrients. Mushrooms are fat-free and low in calories.

Once the compost has been placed in a production room, the mushrooms are ready to harvest in less than four and a half weeks. Preparing the compost takes a little over three weeks, including indoor bulk pasteurization before the compost is placed in the growing rooms.

Other commercially cultivated mushroom varieties have different environmental and nutritional requirements from button mushrooms.

Shiitake and oyster mushrooms generally grow on pasteurized sawdust. Button mushrooms grow on a more nutritionally complex substrate made from several ingredients and prepared over a period of several weeks.

Convection oven:
Preheat the oven to 350°F. Place the mushrooms in an oven-safe dish or tray unless they are supplied in an oven-safe tray. Bake for 6 to 8 minutes, or until the internal temperature reaches 165°F.

Conventional oven:
Preheat the oven to 400°F. Place the mushrooms in an oven-safe dish or tray unless they are supplied in an oven-safe tray. Bake for 10 to 14 minutes, or until the internal temperature reaches 165°F.

Microwave:
Set the microwave to 70% power. Place the mushrooms in a microwave-safe dish unless they are supplied in a microwave-safe tray. Microwave for 4 to 4 1/2 seconds, or until the internal temperature reaches 165°F.

Air Fryer:
Set the air fryer to 325°F. Remove overwrap film. Remove product from tray and place in the air fryer. Air fry for 10 to 14 minutes, or until the internal temperature reaches 165°F.

*Monitor the mushrooms closely to prevent the cheese from bubbling over.

Sauté Butter Puck Instructions: (Cook Before Eating)

1. Remove the butter dollop and place it to the side prior to cooking.
2. Using a stovetop, add sliced mushrooms to a medium-sized pan over medium-high cooking temperature.
3. Stir frequently, cooking mushrooms for 7-10 minutes or until lightly browned.
4. Reduce cooking temperature to medium-low and add the butter dollop, being cautious as the butter may sizzle or splatter. 
5. Stir for one minute or until butter has completely melted.  
6. Remove from heat and serve. (Season to taste as preferred). 

(Note: Adjust cooking times as needed to ensure food is thoroughly cooked. Internal temperature shall reach 165°F.) 

Sauté (Sauce Pack) Instructions: (Cook Before Eating)

1. Remove sauce pack and place to the side prior to cooking.
2. Using a stovetop, add sliced mushrooms to a medium-sized pan over medium-high cooking temperature.
3. Stir frequently, cooking mushrooms for 8-12 minutes or until lightly browned.
4. Remove from heat and add the sauce, being cautious as the sauce may sizzle or splatter. 
5. Mix sauce evenly with mushrooms and serve   

(Note: Adjust cooking times as needed to ensure food is thoroughly cooked. Internal temperature shall reach 165°F.) 

Grilling/Conventional Oven: Preheat grill/oven to 450°F. Remove cardboard sleeve, wrap, and seasoning pack from tray. Add 2 tbsp of cooking oil(not included) to mushrooms. Add seasoning to mushrooms, evenly coating mushrooms. Place tray into preheated oven/grill. Cook for 25-30 minutes, stirring occasionally until completely cooked. 

(Note: Due to oven/grill variances, adjust cooking times as needed to ensure food is thoroughly cooked. To ensure that the product is thoroughly cooked, the internal temperature must reach 165°F.)

Conventional Oven (Cooking in Tray): Preheat oven to 375°F. Do not exceed 400°F. Remove overwrap. With product remaining in tray, place tray in oven and cook for 15-16 minutes to an internal temperature of 165°F. Let cool for 2-3 minutes.

Basket Air Fryer: Set to 325°F. Remove overwrap film. Remove product from tray and place in the air fryer basket. Bake for 10-14 minutes to an internal temperature of 165F.

Basket Air Fryer (DO NOT COOK IN TRAY): Preheat air fryer to 375°F. Remove overwrap film. Remove product from tray and place in the air fryer basket. Bake for 5-6 minutes to an internal temperature of 165°F.

(Note: Adjust cooking times as needed to ensure food is thoroughly cooked. Internal temperature shall reach 165°F.) 

Canned and jarred mushrooms have a shelf life of three years from the date they are processed.

After opening the product, transfer the mushrooms to an airtight container, refrigerate them, and use them within three days.

Depending on the product style, Giorgio Foods uses a blend of white button, portabella, and crimini mushrooms.

All of these mushrooms belong to the species Agaricus bisporus.

Giorgio Foods does not add gluten-containing ingredients to its stuffed, canned, or jarred mushrooms. However, Dawn Fresh Steak Sauce contains gluten.

The products are not tested for gluten, so the company cannot guarantee that they are completely gluten-free.

The following products contain declared allergens:

• All stuffed mushrooms contain milk.
• All Savory Wild Portabella Jerky products contain soy.
• Savory Wild Sesame Ginger Portabella Jerky and Savory Wild Korean Chili Portabella Jerky contain soy and sesame.
• Dawn Fresh Steak Sauce contains wheat and soy.