Kuberako ibiryo bitetse biri muburyo bwo gukonjesha icyuho, icyerekezo cyo kwimura ubushyuhe kikorwa mubiryo byibanze, bityo imiterere yububiko bwibiryo ntizasenywa mubushyuhe bwinshi, kandi ibiryo bikonje bizaba byiza cyane. Nyuma yigihe cya vacuum pre-gukonjesha kugera ku bushyuhe bwo hasi, agasanduku ka vacuum karabujijwe karakozwe kugirango yinjire mu buryo butaha: gupakira vacuum.
Ibiryo bitetse ibiryo byatetse nibikoresho byiza byo gukonjesha ubushyuhe bwo hejuru (nkibicuruzwa byabitswe, ibikomoka kuri souse, soups) kugirango ukureho bagiteri zangiza.