Tucupi is a yellow sauce extracted from wild manioc root in Brazil's Amazon jungle. It is also produced as by-product of manioc flour manufacture. The juice is toxic when raw (containing hydrocyanic acid).Tucupi is prepared by peeling, grating and juicing the manioc. Traditionally a basket-like instrument called the tipiti was used. After being squeezed through the tipiti, the juice is left to "rest" so that the starch separates from the liquid (tucupi).