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1
Combine the flour, salt, and black pepper in a large bowl. Add the eggs and a portion of the lard, then incorporate the water gradually, mixing until a cohesive mass forms. Turn onto a work surface and knead until the dough is smooth, soft, and workable. Shape into a ball, cover, and rest for 30 minutes. The dough is ready when it holds its shape without springing back under a pressed finger.
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2
Roll the rested dough out to a thin, even sheet of 3–4 mm. Spread the surface generously with the remaining soft lard, covering it to the edges. Fold the sheet in thirds as one would fold a letter. Roll out again to 3–4 mm. Fold again. Repeat this sequence three to four times in total. This is where the dish lives or dies: insufficient folds produce a dense flatbread with no interior lamination; cold or uneven lard produces sealed layers that will not open. At the end of the final fold, the dough should feel noticeably more supple and show a faint marbling of fat at the cut edge.
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3
Cut the laminated dough into rounds or ovals of 15–20 cm. Place the testo, cast-iron griddle, or heavy skillet over maximum heat and allow it to become very hot before any bread is placed on it. The surface is ready when a drop of water sizzles and evaporates on contact instantly.
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4
Place the rounds directly onto the dry, ungreased testo — no oil is needed. Cook for 3–4 minutes per side. The underside is ready to turn when the exterior is firm and shows distinct blistering and char in spots; the upper surface will have begun to puff slightly. Turn once and cook the second side to the same result. The finished crescia has a charred, firm exterior and, when torn, reveals a soft, visibly layered interior — each lamination distinct.
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5
Serve immediately from the testo. Drape slices of lonza, prosciutto, or salami over the hot bread; the residual heat of the crescia will begin to melt the fat of the cured meat into the open layers. The flaky interior loses its character as the bread cools — it is not a bread to hold.