The vitD contents found in the raw samples of the different foodstuffs are shown in Table 1. The results for the retention of vitD in the cooked foodstuffs, i.e. egg, margarine and bread are presented in Table 2, Table 3 and Table 4, respectively. The tables show the conditions under which the different food was prepared, the weight loss measured from raw to cooked food product, and where appropriate the true retention of vitD3, vitD2, and 25OHD3. The temperature measured inside cakes and breads throughout the baking process are shown in Fig. 1.