There are a number of small Mexican grocers in Wallingford. San Juanito Mexican Store 35 N Colony St, Wallingford, CT 203-269-5509 Mexican Grocery 137 Quinnipiac St, Wallingford, CT 203-269-7744 Lupitas Mexican Deli 39 S Cherry St, Wallingford, CT 203-774-0014 Hope this helps someone!