Inclusion Criteria:  Aged 18 to 60 years Body mass index (BMI) less than 30kg/m2  Exclusion Criteria:  Pregnant or lactating Fasting blood glucose value > 6.1 mmol/l Any known food allergy or intolerance Medical condition(s) or medication(s) known to affect glucose regulation or appetite and/or which influence digestion and absorption of nutrients Known history of diabetes mellitus or the use of antihyperglycaemic drugs or insulin to treat diabetes and related conditions Major medical or surgical event requiring hospitalization within the preceding 3 months Use of steroids, protease inhibitors or antipsychotics (all of which have major effects on glucose metabolism and body fat distribution) Unable to comply with experimental procedures or did not follow GR testing safety guidelines.