This is a randomised trial involving Type I diabetics who have had Type I diabetes >5 years. They will be using multiple daily injections of a basal insulin and a rapid acting component.Apart from insulin and oral contraceptive, none will be on regular medication. All will be regular consumers of modest amount of alcohol (Female - less than or equal to 14 units, males - less than or equal to 21 units). Each will participate in 2 studies. Subjects will be randomised either to white wine or an equivalent volume of alcohol-free wine.Outcome measures are the results of the effect of acute ingestion of alcohol on glucose levels and intermediate metabolites in subjects with Type I diabetes.