More than 100,000 consumers will be given the opportunity to road test sweet potatoes as part of the travelling road show.
Tasters will be given a McCain coupon book including three 50p coupons.
A competition, where entrants describe their perfect dinner party with a prize of a celebrity chef cooked dinner awarded to the best, will also be launched.
@McCainFoodsGB announces new Canadian President http://t.co/KfZ01Dd1Tg
@BioSafeSystems1 announces Ron Fisher as north-east territory manager http://t.co/HHkWE6UPdO