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Home » Vegetables » Mushrooms » Agaricus Mushrooms » Portobello Mushrooms

Portobello Mushrooms

Portobello MushroomsPortobello Mushrooms
© Denzil Green
Contents hide
  • 1 Cooking Tips
  • 2 Equivalents
  • 3 Storage Hints
  • 4 History Notes
  • 5 Language Notes

Portobello mushrooms are the same species of mushroom as white button mushrooms (Agaricus bisporus). They are just a slightly different strain of that species, which develops a thin layer of tan or coffee-coloured cells on its cap.

When young, and harvested while the cap is still closed, they are called cremini mushrooms.

The fully-grown version of the mushroom is what gets called portobello. The mushroom’s cap can be up to 6 inches wide (15 cm.) Some will have smooth caps, some will have caps that are slightly wrinkled: the slightly wrinkled ones have even more flavour.

Chestnut Mushrooms are also allowed to grow into larger sizes to be sold as “portobellos”; these will have slightly flatter caps. Sometimes portobellos are also called “Flat Chestnut Mushrooms” for this reason.

Being fully opened mushrooms, some moisture loss has started in the portobello, which condenses its flavour and gives it more of a meat-like texture.

Cooking Tips

Some recipes will you have clean out the caps by removing the gills. This is not really necessary. Recipes that have you do this are having you make more room for a stuffing to go in. If you do clean out the gills, toss the scrapings into a small container or freezer bag and freeze them until a use for them in cooking presents itself.

Some say to discard the stems, as they are tough. The stems do need to be cooked, as they are a bit too tough to eaten fresh, but they are lovely for cooking with. If the recipe doesn’t have you chop them up and incorporate them into the stuffing or what you are making, wash them and toss them into the freezer as well.

See also main entry for mushrooms.

Equivalents

6 oz (170g) portobello mushroom caps, stems removed = 2 ¼ cups chopped coarsely

Storage Hints

See main entry for mushrooms. Tip: if you do freeze portobello caps, they won’t come out suitable for use as caps for stuffing. Count on needing to chop them up and use as you would any mushroom that you incorporate into a dish.

History Notes

Portobello mushrooms became popular in the 1980s.

Language Notes

If you’re confused about how the name should actually be spelled, join the club; everyone else is, too. The reason is that the name doesn’t really exist. It’s not an Italian name. Mushroom marketers just made it up, and everyone selling the mushrooms either got mixed up over whether o’s or a’s should be used in the name, and if so where, or some people selling the mushrooms just liked their mushrooms’ name pronounced a little differently.

Variations include:

  • portobello;
  • portobella;
  • portabella;
  • portabello.

For the record, it appears that “portobello” was the original name invented.

“Porto” means “port”, as in a harbour for ships; “porta” means “door” or “gate.” “Bello / bella” means “beautiful.” To be “correct” in Italian, you’d need to say either “portobello” (two o’s) or “portabella” (two a’s.)

Other names

AKA: Flat Chestnut Mushrooms
Scientific Name: Agaricus bisporus var. brunnescens
French: Champignon Portobello

This page first published: Sep 22, 2002 · Updated: Dec 15, 2020.

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Tagged With: Agaricus Mushrooms

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