The changes observed in hardness can thus be attributed principally to differences in volume. This correlation has been The results of the present study, with increasing hardness of layer cakes as the percentage of legume flour increased, after the addition of chickpea flour. However, in the case of sponge cakes, the hardness of cakes with 100% lentil flour was greater than expected from the difference in volume compared to the control cakes. This would suggest that there are changes in the internal structure of cakes which may be caused by the different starch content in the formulae.