How the Tile Makers in San Bartolo Coyotepec Still Control the Color of the Clay
I arrived just after eight. The light was already hard on the dust in the road, and the workshop gate stood open the width of a shoulder. Inside, the compound was cooler by a few degrees. A low wall ran along the left side; behind it, three large piles of earth sat under a corrugated roof that had been extended with scrap tin. One pile was the color of wet cardboard. The second was darker, almost the shade of the finished pieces stacked against the far wall. The third was smaller and gray-white — wood ash, kept separate.
The man who met me at the gate did not give his name at first. He pointed at a low stool near the mixing area and went back to what he had been doing. A woman, older, worked at a table under the shade of the house. She was rolling coils. Neither of them looked up when a pickup slowed on the road outside and then continued.
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I had been told the black comes from the smoke and from something in the clay itself. What I saw was simpler and more specific. They take the local earth, the darker of the two piles, and mix it with a measured amount of the ash. The proportion is not written down. The woman paused once, looked at the batch her son was turning with a short hoe, and told him to add another handful. He did. The batch changed color by a shade I could see from where I sat. She nodded and went back to the coils.
They fire in a pit kiln dug into the ground at the back of the compound. The opening is narrow. When I asked how long a firing takes, the man said it depends on the wood and on the wind. He did not say how they know it is finished. Later I watched him lift a small test piece out with a long iron rod. He turned it once in the light, set it down, and covered the kiln again. The piece was already dark. The rest of the load would stay covered until the next morning.
Tourists buy the finished bowls and plates from a stall at the front of the compound or from the larger shops along the main road. The prices on the stall are written on small cards. Inside the workshop the same forms sit in stacks with no prices on them. When a local buyer came through — an older man who knew the gate and walked straight to the mixing area — he and the son spoke for less than a minute. Money changed hands. No card was consulted. The buyer left with six pieces wrapped in newspaper. The price he paid was lower than the lowest card on the stall by roughly a third. Neither the son nor the woman wrote anything down.
The knowledge of the mix stays inside the compound because the ash and the two earths are kept in specific piles and because the woman still corrects the handful by eye. The son can repeat the motions. He has not yet been the one to decide when the color is right. The tourists on the road see only the finished black. They do not see the third pile or the moment the woman stops the hoe.
I left before nine-thirty. On the way out I passed the stall. A woman I had not seen earlier was arranging new pieces on the cloth. She looked up, then looked past me toward the road. The cards with the prices were already in place. Behind her, inside the gate, the three piles were still under the tin roof, uncovered. The smallest one had been disturbed. A fresh scoop mark showed in the ash.
