The most identifiable thing about a mushroom? The cap, of course! Mushroom caps are the umbrella-shaped tops that give these fungi their unmistakable shape, but they aren’t just there to serve looks. They play an important role in the mushroom's structure, texture, flavour and taste.

From tiny button mushrooms to large portobellos, mushroom caps come in all shapes and sizes. Some are delicate and shy, while others are meaty enough to take the centrestage!

So, what exactly is a mushroom cap, and how do you choose the right one for your recipe?

What Is a Mushroom Cap?

A mushroom cap is the rounded part of a mushroom that sits above the stem. The cap is often the part we eat and cook with, although the stem is edible in many varieties too.

Caps can differ from mushroom to mushroom. For example, the button mushroom has a small, rounded cap, portobellos have a broad, flat cap, oysters have a gorgeous fan-shaped cap, and shiitakes have broad, slightly curved brown caps.

These subtle differences in caps make mushrooms a weapon in the kitchen - versatile and delicious! 

Different Types of Mushroom Caps 

Different mushroom caps bring different textures, flavours and cooking possibilities to the table.

Button

Button mushrooms are small, round and usually white or cream in colour. Their caps are compact and smooth, with a mild, earthy flavour. Because of their size, they can also be cooked whole, sliced or quartered. They're extremely versatile and find their place in pasta, pizza, soups or stir-fries.

Portobello

Portobello mushrooms are mature cremini mushrooms, with large, broad caps and a firm, meaty texture. Their large caps make them excellent at soaking up marinades, making them a popular meat substitute. Grill them, roast them or stuff them - you can’t go wrong.

Shiitake

Shiitake mushrooms have brown caps that are usually rounded, with a slightly curled edge. Their caps have a rich, savoury, umami-forward flavour. Used in Asian dishes like broth, noodles or stir-fries, the caps become pleasantly tender when cooked.

Oyster

Known for their fan-like shape (which also resembles an oyster shell), their caps are usually thin and delicate, growing in clusters with overlapping layers. Oyster mushroom caps are great for sautéeing, roasting and frying. The bonus? Their crinkly edges can become surprisingly crispy.

Cremini

Cremini mushrooms, also known as baby bellas, sit between button and portobello mushrooms in terms of maturity. Their caps are typically light to medium brown and have a slightly firmer texture and deeper flavour than white button mushrooms. They are supremely versatile and go well with everything from omelettes to stir-fries!

How to Choose Good Mushroom Caps

When you're buying mushrooms, look at the caps first. They should look fresh, lively and have an even colour. Stay away from the bruised and damaged mushroom caps. They should feel firm and dry rather than soft and mushy. Avoid mushrooms that feel slimy or have excessive moisture collecting in the packaging.

A mild, earthy smell is another good sign. If mushrooms have a sour, rotten or unpleasant odour, it's best to avoid them. Don't worry about every tiny imperfection. Mushrooms are delicate and can pick up minor bruises during handling. A few little marks don't necessarily mean they're bad.

The best mushroom cap depends on what you're cooking. Choose large, sturdy caps for grilling or stuffing, smaller caps for quick sautés, and delicate varieties such as oysters when you want something light and tender.

Best Ways to Cook Mushroom Caps

Mushroom caps are incredibly forgiving, which is what makes them so popular.

Sautéing: Slice or tear mushrooms and cook them over medium-high heat until they're brown and tender. This works great for button, cremini and shiitake caps.

Grilling: Large portobello caps are the best choice for grilling. Brush them lightly with oil or marinade and cook until tender with nice char marks.

Roasting: Toss mushroom caps with oil, seasoning and herbs, then roast until golden and tender. This brings out their natural savoury flavour.

Stuffing: Large mushroom caps make excellent edible vessels for fillings such as cheese, breadcrumbs, vegetables or herbs.

Stir-frying: Shiitake and oyster mushroom caps are particularly good in quick stir-fries, where their texture holds up well while absorbing sauces and seasonings.

Our go-to tip? Never overcrowd the pan. Mushrooms naturally contain a lot of water, and giving them enough space helps them brown instead of simply steaming.

Should You Remove Mushroom Stems?

Not always. Whether you remove the stem depends on the mushroom and what you're making. Button and cremini stems are generally tender enough to eat and can be chopped up and added to sauces, omelettes, soups or fillings. With shiitake mushrooms, the stems are often tougher and woodier, so they're commonly removed before cooking. Don't throw them away, though - they can add flavour to stocks and broths. For portobellos, you can remove the stem if you want more room for stuffing, but the stem itself can still be chopped and cooked. The key is simple: if the stem is tender, eat it; if it's tough, save it for stock or remove it.

Explore our range of mushrooms (with caps of all sizes) on the website!

FAQs

Are mushroom caps edible?

Yes, mushroom caps are the main edible portion of most common mushrooms and can be prepared in many different ways.

Are mushroom caps and mushrooms the same thing?

Not exactly; the cap is one part of the mushroom, along with structures such as the stem and, depending on the variety, gills or pores.

Which mushroom caps are best for grilling?

Large, firm caps such as portobellos are particularly well suited to grilling because they hold their shape and develop a meaty texture.

Can you eat mushroom caps raw?

Some common mushrooms can be eaten raw, but cooking improves their flavour and texture and makes them easier to digest for many people.

How do you know if a mushroom cap is fresh?

Look for caps that are firm, plump, naturally coloured and relatively dry, with a mild earthy aroma and no slime or obvious signs of decay.