The invention relates to a deep-fat fryer having a frying vessel (17) and at least one heating element (26) arranged in the frying vessel (17). The frying vessel accommodates a frying medium, for example frying fat or oil, the heating element first of all melting the latter, if appropriate, and then heating it to a temperature of from typically 100 to 200 C., in particular of from 150 to 190 C. In the case of known deep-fat fryers, the frying vessel usually consists of metal, for example stainless steel, enameled steel or coated, non-coated or anodized aluminum. In contrast, the deep-fat fryer according to the invention is characterized in that the frying vessel (17) consists, at least in part, of a transparent or see-through material, which allows visual monitoring of the frying process.