The kiln at Moulin des Cendres takes three days to cool. During that time, Kwame Adjei-Fontaine does very little. He walks the terraces above the old olive mill he converted into a studio in the hills behind Forcalquier. He sweeps. He reads. He resists, with visible effort, the temptation to open the door early. “The worst mistakes I have made were all impatience,” he says, pouring coffee into two of his own cups, pale grey and faintly speckled like a thrush's egg. “The fire decides. I am only its assistant.”

Adjei-Fontaine, who is fifty-three, was born in Kumasi and trained first as a civil engineer in Lyon before a weekend pottery course, taken on a whim, redirected his life. He spent six years apprenticed to a traditional potter in the Drôme, then another four working in studios in Mashiko and Onda, in Japan, before establishing his own workshop in 2011. His bowls, jars and tea vessels are now collected across Europe and Asia, and waiting lists for his annual firings stretch beyond two years.

What distinguishes his work, besides its quiet technical mastery, is an absence. Nothing he makes bears his name, his initials or a studio mark. There is no stamp on the base, no signature in the glaze. Buyers receive their pieces wrapped in unbleached cotton with no certificate. Dealers have complained, gently, that this makes provenance difficult. At least one auction house has declined to handle his work for that reason. He is aware of all this, and entirely unmoved.

An argument with the ego

His reasoning is partly philosophical and partly practical. In the Japanese folk-craft traditions that shaped him, anonymity was not a gesture but a condition: the village potter made thousands of vessels for daily use, and the beauty of the work lay in its unselfconsciousness. Adjei-Fontaine worries that a signature changes the relationship between object and owner, turning a bowl into an investment and its user into a custodian. He would rather his cups were chipped than cherished.

A signature asks you to look at the maker. I want you to look at the rice.

The practical argument is about attention. When he signed his early work, he says, he noticed himself making pieces that would look impressive in photographs, heavier and more dramatic than the vessels he actually wanted to use. Removing his name removed that pressure. The forms grew simpler and the glazes more restrained. Today his most celebrated pieces are plain rice bowls, thrown in batches of forty, whose only ornament is the ash that drifts onto them in the wood-fired kiln.

There is, of course, an irony here that he does not deny. The refusal to sign has become a signature of its own, and the mystique of anonymity has helped make his work more desirable, not less. Collectors now identify his pieces by the particular spiral left by his thumb at the base, a mark he cannot avoid making. He laughs about it. “You cannot escape yourself entirely,” he says. “The hand always confesses.”

On the third morning, he opens the kiln. The heat still rises from the bricks, and the pots emerge one by one, some cracked, some slumped, most of them quietly perfect. He discards perhaps a fifth without ceremony, tapping them against a stone until they break. The survivors are lined up on a long table in the courtyard, where the light is kindest. He studies each for a long moment before moving on, as if introducing himself to strangers.