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1
Place the dried cicerchia in a large bowl and cover generously with cold water. Soak for 24 hours, changing the water twice during that period. Drain and discard all soaking water. The soaked cicerchia will have swelled but remain firm; they should show no trace of the soaking liquid, which carries the antinutrients.
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2
Warm the 60 ml of cooking olive oil in a heavy pot over a moderate flame. Add the onion, celery, and carrot. Cook slowly until the vegetables are softened and translucent but not coloured — the soffritto should smell sweet and slightly grassy, not sharp.
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3
Add the lard rind or ham bone to the pot. Add the drained cicerchia. Pour in enough cold water to cover by 5 cm. Bring slowly to a gentle simmer.
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4
This is where the dish lives or dies: simmer the cicerchia gently, partially covered, for 1.5 to 2 hours without adding salt. The skin of the cicerchia is harder than that of a chickpea; any salt introduced before the legume is fully cooked will lock the skin and leave it chalky at the centre. The soup is ready at this stage only when a cicerchia pressed between two fingers collapses entirely without resistance and the broth has turned a deep tan — opaque and intensely scented of the legume and pork. Any residual chalkiness is a failure; continue simmering.
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5
Once the cicerchia are completely tender, season with fine salt. Add the crushed garlic clove and the peperoncino. Stir and allow the soup to rest on a very low flame for five minutes; it should smell of warm spice and earth, the peperoncino heat rising in the steam.
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6
Place torn stale bread in each warmed bowl. Ladle the soup over the bread, ensuring each portion receives both broth and legumes. Thread raw extra-virgin olive oil across the surface. The bread should begin to absorb the broth immediately, swelling into the substance of the dish; the oil will pool in bright drops against the dark tan surface.