From the start of the autumn term, the Council's Somerset County Service will tweet each morning from @SCSSchoolMeals with the day's lunch menu for all 88 schools across the county.
Parents, grandparents or carers can sign up to the service, which will also update subscribers on special theme days, tester sessions and how to apply for free school meals.
Karen Rafferty, from the marketing department at Somerset County Service, said: "We are always looking for new ways to get information to parents, so using a social network like Twitter is the next logical step."
The service will be trialled for one term, with the results to be published online.
Somerset County Council claims to be the first local authority to use Twitter to publish its school menus.