The publishing house claims that this will be UK's biggest celebration of food and drink.
The event will have competitions, offers, recipes, reviews and giveaways from NatMag publications such as Good Housekeeping, Country Living, House Beautiful, She, Prima, Zest, Reveal, Best and Esquire.
There will be culinary workshops, tastings and demonstrations by celebrity chefs as well as the Good Housekeeping Food Awards.
The festival, aimed at NatMag's 10 million readers, will be held from 1 May. It is sponsored by the supermarket chain, Sainsbury's.