Flavour preference tests were used in this study to determine the role of flavour in diet selection in domestic horses. Eight stabled horses were provided with hay ad-libitum and a standard unflavoured concentrate ration in the morning. The actual trial involved providing the horses with a variety of flavoured rations. Six flavoured diets were presented each day with an hour between each meal presentation. Of the 15 flavours presented 12 were accepted by all the horses. The fastest mean consumption times were found with the following flavours: banana, carrot, cherry, cumin, fenugreek, oregano, peppermint, and rosemary. The second trial involved presenting the eight favourite flavours in paired preference tests. The tests were scored based on 0 (rejection) to 1 (exclusive consumption). The following preference order was determined: fenugreek, banana, cherry, rosemary, cumin, carrot, peppermint, and oregano. The third trial was conducted to determine relative consumption time of the top two flavours, fenugreek and banana. The horses took significantly longer to consume the flavoured pellets compared to the unflavoured pellets. The results of these trials indicated that diet acceptance, selection and consumption times were all significantly influenced by flavour.