As per my knowledge, service tax (if applicable) shall be payable under the category of "Restaurant Service). The definition of taxable service for Restaurant service is
"Taxable service, means any service provided or to be provided to any person by a restaurant, by whatever name called, having the facility of air-conditioning in any part of the establishment, at any time during the financial year, which has licence to serve alcoholic beverages, in relation to serving of food or beverage, including alcoholic beverages or both, in it premises."
With effect from 1.5.2011, by way of Notification No. 34/2011 (read with Notification No. 1/2006), only 30% of the gross amount charged shall be liable to service tax in case of restaurant service. This abatement is subject to the conditions prescribed in the notification.
But here, we are not sure as to under what service the service provider is charging Service Tax.
In addition, there is a sale of food which will attract VAT. Here few companies do charge VAT on the same amount as is for the Service tax. However, here, in your case, they have charged VAT amount even on the Service tax portion, which I think is not proper.
Others may please provide their feedback on this..