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1
Remove the nduja from the refrigerator at least 30 minutes before serving. Cold nduja firms and will not spread; the correct texture is a soft, unctuous paste that yields easily under a knife. The paste should be burgundy-red and glossy at room temperature.
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2
Cut the pane di Altamura into slices of approximately 2 cm. The bread requires no toasting for this preparation — its open, absorbent crumb serves as the neutral platform. If a warm application is preferred, toast lightly until the crust firms without colouring deeply; the crumb must retain its capacity to absorb the chilli-fat.
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3
Spread the nduja directly onto the bread with a palette knife or the back of a spoon. The paste should move freely and coat the surface in an even, thick layer. This is where the dish lives or dies: the nduja must be genuinely at room temperature — not chilled, not warmed artificially — so that the chilli-infused fat distributes across the bread in a single, unbroken film rather than tearing or clumping. A correct spread shows a uniform burgundy surface with no pale streaks of unrendered fat.
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4
Allow the dressed bread to rest for two minutes before serving. The chilli-fat will begin to permeate the crumb. The heat on the palate should be sustained and slow-building, not sharp; a sharp or immediate burn indicates the nduja has not had sufficient time at room temperature to fully relax.