An animal food composition comprising a protein source and corn starch,wherein native high-amylose corn starchcomprises at least 50% of the corn starch. The composition can be used totreat or prevent a food allergy in an animal. Also, aprocess for the preparation of an animal food composition comprising mixing aprotein source, corn starch and water to form a mixtureand heating the mixture; wherein native high-amylose corn starch comprises atleast 50% of the corn starch.