Tub or tank with impermeable walls utilized to slake the quicklime in water, and thus transform it into lime paste. Giacinto Carena (1853) - registers the term 'truogolo' as the tub adapt to slake the lime - he describes it as a "large wooden box, without a bottom, or where there is open space to the ground between three or four planks, and placed with a knife, approximately at the top, three or four low walls."