A STERILISED FOOD PRODUCT CONTAINING STARCH, THE STARCH HAVING: (A) AN AMYLOSE CONTENT OF AT LEAST 60 WT.%; (B) A MEDIAN PARTICLE SIZE OF BETWEEN 1 AND 15 µM, AT LEAST 90 WT.% OF THE STARCH PARTICLES HAVING A PARTICLE DIAMETER OF LESS THAN 50 µM; AND (C) A NON-DIGESTIBLE STARCH CONTENT OF LESS THAN 50 WT.%. THE PRODUCT IS OBTAINED BY HEATING AND RAPIDLY COOLING THE STARCH PRODUCT AND HAS A HIGH SLOWLY DIGESTIBLE STARCH CONTENT. IT IS SUITABLE FOR USE IN THE TREATMENT OF DIABETES, OBESITAS, INSULIN RESISTANCE, OR FOR POSTPRANDIAL GLUCOSE RESPONSE.