The deep black glow of Portuguese pottery often captivates those who see it for the first time. Many ask, “Is it painted?” — but the truth is more poetic. The color is not applied by hand; it is born in the fire. Through a traditional process that removes oxygen and fills the kiln with carbon, the clay darkens both inside and out. This transformation, entirely natural, also strengthens the material and makes it more resistant to water and time.

This ancient process is called Soenga, and it still survives in Molelos, near Tondela, and Bisalhães, in Vila Real — two villages where the dialogue between earth, smoke, and flame continues to shape extraordinary works of art.

Every piece begins as red clay, kneaded and shaped entirely by hand. Over centuries, potters in these regions have learned to mix several local clays, each with its own properties. Thanks to this knowledge, some ceramics can endure electric cooktops, others gas flames, and some even the heat of the oven — a versatility born from generations of careful observation and experiment.

Once shaped and dried, the pieces are placed on a rough grid of pine beams, while bundles of pine needles feed the first flames below. This early firing stage lasts about an hour, allowing moisture to escape slowly. The main firing takes place inside a circular pit dug in the ground — about half a meter deep — filled and sealed with pine chips and earth. As it burns, reaching 950 to 1000°C, the potters regulate the air flow by opening and closing small vents. Toward the end, they starve the fire of oxygen, letting carbon-rich smoke envelop the clay until it turns its signature black.

Among the most emblematic creations born from Soenga are the cantil, a traditional flask used by farmers to carry water or wine to the fields, and the curious bilha do segredo — the jug of secrets. Beyond its function, this piece is an invitation to conversation, a form of entertainment often brought out during friendly gatherings. Outwardly simple, it hides a playful mechanism within its graceful design: the handle conceals a narrow channel that allows one to drink through it, but only if a hidden opening is covered in just the right way. This small mystery delights guests and sparks laughter as they try to uncover the secret for themselves.

Each Soenga is both a craft and a ritual — a meeting of earth and fire guided by human hands and ancient memory. The black ceramics of Molelos and Bisalhães carry not only beauty and utility, but also a sense of wonder, connecting today’s world to the timeless rhythm of tradition.

Video by Câmara Municipal de Tondela