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Wakha wazibuza, ngaba i-oven ye-aluminium trei ikhuselekile okanye yindlela nje emfutshane yokuyipheka engafanelekanga? Awuwedwa—abantu abaninzi bayisebenzisela ukubhaka, ukuyosa, okanye ukukhenkceza. Kodwa ngaba izikhongozeli ze-oven ezine-foil zingamelana nobushushu obuphezulu ngokukhuselekileyo?