Soak the chickpeas in plenty of cold water overnight.
The next day, drain the chickpeas, place in a large pan, cover with fresh cold water and bring to a simmer. Skim the surface, then add the chilli and 3 of the garlic cloves. Simmer very gently, not allowing the liquid to dry up, for at least 2 hours or until the chickpeas are perfectly tender. Allow to cool in their own liquor. (If u