Because nutritionists are skilled at judging food and are equipped with information from other suppliers with which to compare, they can demand that below-standard food products be taken back or they can change them with those of other suppliers, crushing any hope that unscrupulous suppliers might have of pulling the wool over your eyes.
由於營養師較具食材判斷力，手上也握有其他廠商資源可供比較，遇到不合格的食材，可以馬上要求退換或以其他貨源取代，讓契約廠商不敢心存僥倖。