Sainsbury's Nectar shoppers urged to use scan cards before TuesdayNectar Card customers can now snag 25 per cent off products in the Taste the Difference line until October 7. View Image Sainsbury's Nectar shoppers urged to use scan cards before TuesdaySainsbury's has slashed the cost of a popular range to celebrate 25 years of its existence. Nectar Card customers can now snag 25 per cent off products in the Taste the Difference line until Tuesday October 7. The supermarket said: "Products on promotion include customer favourites such as the Taste the Difference Lasagne, Taste the Difference Pistachio & Choc Cookies and baked goods including sourdough loaves and flatbreads. Those who are not Nectar card holders can sign up for a membership via the Nectar website in order to snag the deal while it lasts.