MRI and MRS provides a powerful tool to non-invasively assess lipid deposition in vivo. In addition to fat fraction measurements, recent studies have shown that lipid composition may play an important role in health outcomes. 1H MRS at high field strength provides good SNR of individual fat peaks and can be used to asses lipid composition (saturation, poly-unsaturation etc.). In this study a number of edible oils were scanned at 3T and 7T and MR spectra used to compare measurements of lipid composition with predicted values. An in vivo dataset was also acquired for comparison.