input gst credit on food item

No, you can not take the ITC on the same.

Expenses relating to food, beverages and outdoor catering can be claimed as input tax credit only when inward supply of goods or services or both of a particular category is used by a registered person for making an outward taxable supply of the same category of goods or services or both or as an element of a taxable composite or mixed supply. Hence, regular taxpayers would not be eligible for claiming input tax credit on expenses relating to food, beverages and catering.

no you cannot claim
please refer sec17(5)