(20 votes, average: 3.30 out of 5)
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Butter Bolete
Edible 
Autumn 
Summer 
A great and usually large mushroom, almost as good as the Penny Bun with a firm texture.
| Mushroom Type | |
| Common Names | Butter Bolete, Oak Bolete |
| Scientific Name | Boletus / Butyriboletus appendiculatus |
| Season Start | Jul |
| Season End | Oct |
| Average Mushroom height (CM) | 12 |
| Average Cap width (CM) | 20 |
Cap
Rusty to red brown or sometimes lighter, often irregular, sometimes has a ‘cracked’ skin especially near the centre.
Pores
Lemon yellow, tight sponge like pores that darken a bit with age. These will bruise to a blue colour.
Stem
Straight or clavate, club shaped, lemon yellow at the top with yellow reticulation, (a mesh or net like covering) then usually a change to a pale orange to red towards the base.
Flesh
White to pale yellow. Turning blue when cut, the base bruising rusty brown.
Habitat
Mainly around Oak but will grow with other deciduous trees.
Possible Confusion
Other Boletes. Although the Oak Bolete is quite distinctive care should be taken when trying to identify this mushroom as it breaks the simple edible rules for Boletes (if a bolete has red on it anywhere, do not eat it and if it stains blue when cut, again, don’t eat it).
Spore Print
Olivaceous/brown. Subfusiform.
Taste / Smell
Excellent.
Frequency
Uncommon.
5 comments for Butter Bolete
Believed to have found one last week.
Am in the process of drying it.(sliced)
Please only eat them if you are 100% sure that you have a Butter Bolete.
Found 300g wet of these this morning and confirmed they were butter boletes with the above explainer, which in my view is accurate and v.helpful. Cheers!
Ps. After watching the vid i spent a happy 20 minutes spooning out the pores with my car keys (was all i had on my person) and scattering in all directions under and around several old oak trees, as per where i found these 🙂
Update: a wonderful mushroom to eat! Smell is incredibly strong, even for my terrible sense of smell 🙂 I also found a few Bay Bolete at the same location, identified again through this site. Both types went onto home made pizzas, the Butter Boletes into some roasted cauliflower pilaf and my favourite to date, sliced up and sautéed in some butter, drizzle of truffle oil, salt and pepper and a pinch of herb de province and served on toasted brown sourdough with a fried egg.