. . . "A method of cleaning deposits from hard surfaces, comprising the steps of:(a) applying to the cooking surface a cleaning composition comprising, by weight,:(1) from about 0.5% to about 10% of polyhydroxy fatty acid amide surfactants having the formula: ##STR10## wherein R1 is H, methyl, ethyl, propyl, butyl, 2-hydroxyl ethyl or 2-hydroxy propyl; R2 is a C5 -C31 hydrocarbyl; and Z is a polyhydroxyh" .