Portabella Mushrooms have a very white, flat top. The Portabella mushroom, like all mushrooms, can be found in the Organic Section of the inventory
How to Obtain
Portabella Mushrooms can only be found in Temperate Biome worlds. To obtain a portabella mushroom, one must find and mine a world generated mushroom.
There are currently no uses for portabella mushroom except for decoration and the Forager achievement. However, all mushrooms will play a part in the extensive process of making Mushroom Wine.
This Mushroom was added when the Mushroom Wine idea was released to the public. There were only 3 other mushrooms before this update.