def add_side_to_basket(self, item, quantity=1):
        '''
        Add a side to the current basket.

        :param Item item: Item from menu.
        :param int quantity: The quantity of side to be added.
        :return: A response having added a side to the current basket.
        :rtype: requests.Response
        '''
        item_variant = item[VARIANT.PERSONAL]

        params = {
            'productSkuId': item_variant['productSkuId'],
            'quantity': quantity,
            'ComplimentaryItems': []
        }

        return self.__post('/Basket/AddProduct', json=params)