
White mushrooms, baby bella (or cremini) mushrooms, and portobellos are all the same species of mushroom—Agaricus bisporus. The only difference between them is the stage of maturity at which they are harvested. White mushrooms, also known as button mushrooms, are the youngest and most immature form of Agaricus bisporus, with a mild flavor and tiny size. Baby bella mushrooms are slightly older, with a firmer texture and a more earthy flavor. Portobello mushrooms are the largest and fully mature version of Agaricus bisporus, with a strong flavor and meaty texture. So, to answer the question, yes, white mushrooms are simply immature portobellos.
| Characteristics | Values |
|---|---|
| Scientific Name | Agaricus bisporus |
| Common Names | White Mushrooms, Baby Bella Mushrooms, Portobellos, Cremini Mushrooms, Portabellas, Portobellas, Mini Bellas, Italian Brown Mushrooms |
| Color | White mushrooms are ivory, white, or pale tan in color. Portobellos are brown. |
| Size | White mushrooms are smaller, ranging from 1/2 inch to 2 inches in diameter. Portobellos are larger. |
| Texture | White mushrooms are tender and have a delicate texture. Portobellos have a drier, meatier texture. |
| Flavor | White mushrooms are mild in flavor. Portobellos have a stronger, earthier flavor. |
| Harvest Time | White mushrooms are harvested at an immature stage, after a few weeks of growth. Portobellos are harvested when fully mature. |
| Uses | White mushrooms are good for pickling and marinading. Portobellos are used as meat substitutes and in grilling and roasting. |
| Nutritional Value | Both are good sources of B vitamins, riboflavin, pantothenic acid, copper, phosphorus, and potassium. |
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What You'll Learn

White button mushrooms are the youngest form of Agaricus bisporus
White button mushrooms, also known as white mushrooms, common white mushrooms, or common mushrooms, are the youngest form of Agaricus bisporus. They were first developed in the early 1920s by Pennsylvania mushroom farmer Louis Ferdinand Lambert, who noticed a clump of mushrooms with white caps in his mushroom bed. Lambert specifically cultivated the white strain, and they soon became popular. White button mushrooms are tiny, ranging in size from half an inch to a few inches in diameter. They have a smooth, white cap, and a closed veil covering their gills. They have a mild, slightly earthy flavor and a delicate texture, making them a good candidate for pickling and marinating. They are also often sliced and eaten raw in salads, and their tiny size makes them a great option for soups and stews.
White button mushrooms are the least mature form of Agaricus bisporus, which also includes cremini (or baby bella) mushrooms, and portobello (or portabella) mushrooms. Agaricus bisporus mushrooms are the most popular mushrooms in North America, and they account for 90% of mushroom consumption in the United States. They are cultivated at different stages of maturity, which gives rise to the different names and appearances.
Baby bella mushrooms are slightly older than button mushrooms but are still considered juvenile. They have a smooth, rich brown cap, about 1.5 to 2 inches in diameter, and a closed veil covering their gills. Their flavor is earthier than that of button mushrooms, and they have a firmer texture.
Portobello mushrooms are the oldest and most mature form of Agaricus bisporus. They are fully grown, with large, brown caps that have unfurled to reveal the gills underneath. They have a strong, earthy flavor and a drier, meatier texture. They are often used as meat substitutes in recipes and are a good option for grilling or roasting. They are also commonly used as a substitute for bread buns in Paleo, Keto, or low-carb diets.
All three types of mushrooms have similar nutritional profiles, as they are the same species. They are great sources of B vitamins, including riboflavin and pantothenic acid, and contain significant amounts of minerals like copper, phosphorus, and potassium. If exposed to sunlight or UV light, they can also be a good source of Vitamin D.
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Baby bella/cremini mushrooms are slightly older
White mushrooms, baby bella/cremini mushrooms, and portobellos are all the same species of mushroom—Agaricus bisporus. The only difference between them is that they are harvested at different stages of their growth cycle.
Baby bella mushrooms, also known as cremini mushrooms, are the immature brown strain of Agaricus bisporus. They are slightly older than button mushrooms, but juvenile to portobello mushrooms. These mushrooms are marketed under a wide variety of different names like baby portobello, mini bella, crimini, Italian brown mushrooms, and common mushrooms.
Baby bella mushrooms have a smooth, rich brown cap that is about 1 1/2 to 2 inches in diameter. Like white mushrooms, they also have a closed veil on the underside of the cap covering their gills. Being more mature in age, baby bellas have a firmer texture and a more earthy flavor compared to white button mushrooms.
White button mushrooms, on the other hand, are the youngest, most immature form of a white strain of Agaricus bisporus. They were developed in the early 1920s by Pennsylvania mushroom farmer Louis Ferdinand Lambert specifically for their white color. White mushrooms have a smooth, white cap that can range in size from 1/2 inch to 2 inches in diameter. On the underside of the cap, there is a closed veil covering immature gills. White mushrooms have a mild, slightly earthy flavor and a delicate texture. They can be sliced and eaten raw in salads, but their flavor definitely intensifies with cooking. Due to their tiny size, using whole mushrooms is a great option in soup and stew recipes.
Portobello mushrooms, on the other hand, are the mature form of Agaricus bisporus. They are much larger and have caps that are dark brown. As the mushroom matures, its cap grows, unfurls to reveal gills underneath, and deepens in color. Portobellos have had time for a much deeper flavor to concentrate. Their taste is savory and umami-rich, with a drier, meatier texture. They can work great as meat substitutes in some recipes and are an excellent choice for grilling or roasting. They also make a tasty substitute for bread buns if you are following a Paleo, Keto, or low-carb diet.
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Portobellos are the largest, fully mature version
White mushrooms, baby bella mushrooms, and portobellos are some of the most popular types of mushrooms in North America. They are all varieties of Agaricus bisporus mushrooms, differentiated by their harvest times and colours. White mushrooms, also known as white button mushrooms, are the youngest, most immature form of the white strain of Agaricus bisporus. They were developed in the early 1920s by a Pennsylvania mushroom farmer, Louis Ferdinand Lambert, specifically for their white colour. They have a smooth, white cap ranging from 1/2 inch to 2 inches in diameter. They possess a mild, slightly earthy flavour and a delicate texture, making them ideal for salads, soups, and stews.
Baby bella mushrooms, also known as cremini mushrooms, are the immature brown strain of Agaricus bisporus. They are slightly more mature than button mushrooms but still juvenile compared to portobello mushrooms. Baby bella mushrooms have a smooth, rich brown cap about 1 1/2 to 2 inches in diameter. They have a firmer texture and a more earthy flavour than white button mushrooms, making them a popular choice in the kitchen.
Portobellos, also known as portabella or portobello mushrooms, are the largest and fully mature version of Agaricus bisporus. They have had more time to grow, resulting in a lower moisture content and a stronger, more concentrated flavour. Portobellos have a drier, meatier texture, making them excellent meat substitutes in recipes. They are perfect for grilling or roasting and can even be used as bread bun replacements for certain diets. Portobellos have large, dark brown caps that have fully unfurled to reveal brown gills underneath, with off-white or tan stalks that are edible but tougher than those of button mushrooms.
To summarise, white mushrooms, baby bella mushrooms, and portobellos are all the same species of mushroom, Agaricus bisporus, but they differ in maturity, appearance, flavour, and texture. White mushrooms are the youngest and most immature, baby bella mushrooms are slightly more mature, and portobellos are the largest and fully mature version with the strongest flavour and meatiest texture.
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White mushrooms are mild in flavour and good for pickling
White mushrooms, baby bella mushrooms, and portobellos are some of the most popular types of mushrooms in North America. They are all varieties of Agaricus bisporus mushrooms, which means they are the same species of mushroom but were harvested at different ages in their growth cycle. White mushrooms, also known as white button mushrooms, are the youngest and most immature form of the white strain of Agaricus bisporus. They were developed in the early 1920s by Pennsylvania mushroom farmer Louis Ferdinand Lambert, specifically for their white colour.
White mushrooms have a mild, slightly earthy flavour and a delicate texture. They can be sliced and eaten raw in salads, but their flavour intensifies when cooked. Due to their small size, they are a great option for soups and stews. Their mild flavour also makes them a good candidate for pickling and marinating. Pickled mushrooms are easy to make and can be used in a variety of dishes, such as charcuterie boards, sandwiches, salads, and as a side dish with grilled meat.
To make pickled mushrooms, you will need mushrooms, water, vinegar, and salt. You can use any variety of mushrooms, but white mushrooms are a popular choice due to their mild flavour, nutritional value, and economical price. The mushrooms should be cleaned thoroughly and can be left whole or cut into bite-sized pieces. The pickling process involves boiling the mushrooms in a brine made of vinegar, water, and salt, and then storing them in the fridge.
White mushrooms are a versatile and popular ingredient, and their mild flavour makes them ideal for pickling. Pickled mushrooms are a tasty and economical way to preserve and enjoy this fungus, and they can be easily made at home with just a few simple ingredients.
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Portobellos are meatier and can be grilled or roasted
White mushrooms, baby bella mushrooms, and portobellos are some of the most popular types of mushrooms in North America. They are all the same species of mushroom—Agaricus bisporus—but are harvested at different stages of maturity, resulting in variations in texture, flavour, and size.
White mushrooms, also known as white button mushrooms, are the youngest and most immature form of Agaricus bisporus. They were developed in the early 1920s by a Pennsylvania mushroom farmer, Louis Ferdinand Lambert, specifically for their white colour. These mushrooms have a mild, slightly earthy flavour and a delicate texture. They are tiny, usually ranging from 1/2 inch to 2 inches in diameter, and have a smooth, white cap. White mushrooms are versatile and can be sliced and eaten raw in salads or cooked in soups and stews.
Baby bella mushrooms, also known as cremini or crimini mushrooms, are the immature brown strain of Agaricus bisporus. They are slightly more mature than white button mushrooms but are still juvenile compared to portobello mushrooms. Baby bella mushrooms have a smooth, rich brown cap, about 1 1/2 to 2 inches in diameter. They have a firmer texture and a more earthy flavour than white button mushrooms.
Portobello mushrooms are the largest and most mature form of Agaricus bisporus. They have had more time to grow and lose moisture, resulting in a drier, meatier texture and a stronger flavour. Portobellos have brown caps that are fully unfurled, revealing brown gills underneath, and a white or cream-coloured stalk. Their savoury and umami-rich taste makes them excellent meat substitutes in various recipes. Portobellos are versatile and can be grilled, roasted, or used as a tasty substitute for bread buns in Paleo, Keto, or low-carb diets. They are also suitable for making stuffed mushroom dishes and mushroom soup, as they can hold their own against other strong flavours.
In summary, portobello mushrooms are the mature form of Agaricus bisporus, with a drier, meatier texture and a more concentrated flavour compared to their immature counterparts. Their larger size and savoury taste make them ideal for grilling or roasting, either on their own or as a meat substitute in various recipes.
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