The detection of lard in food products is of special interest for reas
ons of quality, dietetics or religious belief. Works carried out to da
te have mainly concerned fatty mixtures with others food components. T
his work studies a complex food products (dehydrated stock model) cont
aining hydrogenated palm and beef fat. An appraisal is carried out reg
arding the detection sensitivity to the addition of 0.2% lard, using d
ata on sterols and fatty acids in the beta position. This last model o
nly appears reliable for the goal proposed.