These pots have been fired twice. The first firing is in an electric kiln to 900 degrees Celsius
After being sprayed with a copper based glaze they are then fired in a small gas kiln. When the pot has reached 1000 degrees C it is removed with tongs whilst red hot and placed in a bin full of sawdust.
The colour develops when the pot is uncovered and exposed to air.
To preserve the unique matt surface avoid frequent handling especially with moist or hand lotion covered hands.
The best method of cleaning is using an upholstery brush attached to a vacuum cleaner.
These pots are porous and intended for decorative use.