Guaranteed fresh until printed date. Guaranteed fresh until printed date or this snack's on us. Questions or comments? 1-800-352-4477 Mon-Fri 9:00am to 4:30pm CT/chat at fritolay.com. Partially produced with genetic engineering. Good fun! It all starts with farm-grown potatoes- cooked and seasoned to perfection. Then we add just the right balanced of tangy vinegar. So every Lays potato chip is perfectly crispy and delicious. Happiness in Every Bite. Connect with Us: Facebook. Twitter. No artificial flavors. No preservatives.