The two-day event, taking place from 27-29 August, will be at Hampton Court Palace and is organised by River Street Events.
Nestlé Cereals will be handing out sample bags of its Cheerios Oat Crisp, while Naked Wines will invite visitors to try its range of wines and Panasonic will also be showcasing its slow juicers and offering sample juices.
Yo! Sushi will talk guests through the steps to becoming a sushi expert in a specially tailored masterclass where those attending will create three sushi dishes.
Liz Young, head of events at Historic Royal Palaces, said: "We are delighted to host the third BBC Good Food Festival in the grounds of Hampton Court Palace over the August Bank Holiday weekend. The show perfectly reflects the history of food and celebration at the palace – in Tudor times the grounds at the front of the palace housed breweries and bakehouses, while in 1850 there was also a market garden where produce was sold to local residents."
New speciality producers at the show include raw, organic, handmade chocolate from Pana Chocolate; Borough Markets Jumi Cheese; speciality coffee from Alfie Coffee Roasters; gin from Warner Edwards Distillery and fresh cocktails from the Deco Noir Vintage Bar.
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