King Alfred’s Cakes

King Alfred’s Cakes
Inedible mushroomsEdible
Autumn
Summer
WinterWinter
spring Spring
Inedible mushroomsEdible
Autumn
SummerSummer
WinterSummer
springSpring

Although not edible, King Alfred’s Cakes make great firelighters, can be used as charcoal briquettes for campfire cooking, used to transport fire and as hand warmers on a cold day.

Scientific Name – Daldinia concentrica

Common Names:

King Alfred’s Cakes (EN), Cramp Balls (EN), Pelen Ddu (CY), Szenes Gömbgomba (HU)


King Alfred’s Cakes fruiting body

4-7cm. The fruiting body is usually spherical and starts brown, this then becomes black. The outer surface appears smooth until very close inspection reveals tiny pores.

King Alfred’s Cakes pores

The pores are tiny and on the fruiting body surface.

King Alfred’s Cakes flesh

Tough and dry with concentric circles of grey/silver and black. These are like growth rings in a tree and show the annual growth of the mushroom.

King Alfred’s Cakes habitat

Mainly growing on dead Ash but can be found on Beech and occasionally other trees.


A very widespread and useful, if not edible, mushroom.
It can be used to catch a very weak spark when fire lighting with flint and steel or an ember when using a bow drill.
When lit, they can be used to transport fire as they will smoulder for quite a while, depending on size, and another one can be lit from the first one before it goes out.
They can be used as charcoal briquettes to cook food and produce minimal smoke so this mushroom is taught to the special forces.
On a cold day they make great little hand warmers, although care should always be taken as they burn quite hot.