According to Rule 3(7)(iii)
If free food and non alcoholic beverages are provided by the employer during the working hours (including overtime) AT the office or business premises or though PAID VOUCHERS or tea or snacks or free food and non alcoholic beverages in remote area or on off-shore installation
then TAXABLE VALUE of PERQUISITE shall be taken as NIL
In my opinion this part is applicable for your co.
Otherwise the amount received is taxable in the hands of employees to the extent amount not recovered from the employee. i.e if employee has reimbursed then taxable value of perquisite will be amount incurred by employer for such perquisites less amount recovered (if any).