Iphampu yebele eyenziwa ngesandla ingumkhiqizo kamama nowengane wokuqoqwa kobisi lwebele kanye nokuqoqwa kokuvuza kwangemva kokubeletha.Umkhiqizo uklanywe ngomlomo omkhulu wendandatho yobubanzi, ofanelana nezinhlobo ezahlukene zamabele.Umkhiqizo wenziwe ngejeli ye-silica yezinga lokudla, ekwazi ukumelana nokuwa, kulula ukuyihlanza, isekela isitimu esishisa kakhulu ukuze kuqedwe amagciwane, futhi kulula ukuyithwala.