adjust

Adjusting the expiry date on a product

Q: I have purchased tomato sauce for resale; however, the tomato sauce is past the manufacturer’s best before date. I am in the food industry for the past 20 years and I know that the tomato sauce will not go bad by the date reflected by the manufacturer. In fact, the item is still good for another one year after the best before date. I wish to get the item tested by an independent food technologist and then adjust the date on the packaging to the date the independent food technologist recommends. Will it be permissible for me to adjust the date or will this fall under deception?