Jack, son of Sandbanks restaurateur Rick, is a chef in his own right, and is celebrating his debut cookbook. Ella Walker finds out more.

Jack Stein is frank about the premise of his debut cookbook - he pretty much nicked it off his TV legend and traveller-cum-chef extraordinaire dad.

"I've basically stolen one of Rick's ideas that he didn't really capitalise on," says Stein, wryly. "You can't plagiarise within your own family, I've discovered."

The 36-year-old is Rick Stein's middle son, and chef director of the Stein empire. Based in Cornwall, he's responsible for developing and implementing menus across the family's restaurants, and now he's preserved a slew of his favourite recipes - some borrowed, some adapted, some all his own - in Jack Stein's World On A Plate, his debut cookbook.

The idea he thrifted from his dad was to collect ideas, magpie-like, from his travels and then reproduce them with British produce. "We've travelled the world and found these amazing recipes and ingredients," says Stein, "but what Dad does when he comes back to England is, he does them with local, British ingredients."

It's a kind of fusion cooking Stein calls "very iconoclastic - it doesn't really have any rules this book, it's just whatever I think works". As a result, he's clear: "If you're a purist, this book's not for you."

There's nothing wrong with borrowing flavours - but some culinary greats can get sniffy about it "People with a great culinary history, like the French and the Italians, can have a big problem with it," he says, of cherry-picking and mixing flavours from different cuisines. "What Britain and America are doing now is getting to their level in terms of provenance of food, quality of ingredients and understanding the seasons, and the Italians and the French have been doing that forever.

"I guess, their point is: 'Our cuisine has been built with these fundamentals and you're just building a new cuisine with everyone else's'."

"For the British, the Americans and the Australians," he continues, "we're quite young in our appreciation of really good food, so I think it's quite fun to say, 'Well, I quite like a bit of everything'."

There's always a new country to visit and a new cuisine to try For three months a year, setting off in December, the whole Stein family would travel the world together. The other nine months, Stein's parents were busy running their Cornwall restaurants. They "were virtual strangers to their three offspring", he writes in the book.

He slurped oysters in France for the first time aged four, witnessed the poverty of India at 11, and went on to work in kitchens in Sydney, Paris and Switzerland - but the cuisine that's most surprised and intrigued him is that of Spain. "I know it's not very far away, but when you're long-haul and you land in Singapore or Bangkok, and it's night-time and you're having a beer and all these crazy flavours, that's what you go for. But," he continues, "I always thought Spanish food was just tapas, and a bit of paella." That changed on a recce trip to San Sebastian with his dad for Rick's Spanish series. "It was like, this place is mental!"

They ate at cult wood fired restaurant Etxebarri (in the world's top 10 restaurants) and Restaurante Arzak, famed for its Basque food, all the while gorging at tapas and pintxos bars. "In one day, we did more incredible eating than I've ever known and we didn't even scratch the surface of San Sebastian, let alone Spain," says Stein reverently.

Argentina and Brazil are next on the list - although he's just become a first-time dad, to baby son Milo, so fatherhood and his TV show, Born To Cook, are the priority right now. "I surf and the surf's great down there," he adds.

When we talk on the phone, he's actually looking out at the surf, the waves concealing his beloved Cornish crabs. "I love crab, it's very sustainable, there's heaps of it down here," he says. "Just above the reef where I'm sat now, you can go down with a pole and stick it in a hole and get your own." With seafood that fresh at his feet, it's a wonder he ever leaves the country at all.

Even the son of Rick Stein can be a fussy eater sometimes "We all were a bit," he admits, when asked if being a fussy eater was even an option growing up in Padstow. "Mum and dad were at work and because they were away so much, we were often with our gran and aunties and uncles, and childminders, so we did push the boundaries." They were "shown quite short shrift for being fussy", however, and if anyone kicked off at dinner, they'd be 'thrown out'. "I'd get thrown out a lot," says Stein with a laugh.

These days, there's almost nothing he won't try, from locusts and crickets (including a "delicious cricket marmite") while surfing in Mexico, to a tarantula in Laos ("which was weird, I don't like spiders at all, that was horrible"). He's pragmatic about eating insects though; after all, it's "normal for most of the world's population, they're just a bit strange when you first see them".

He thinks we're on track for a battle akin to "VHS and Betamax, or CDs and mini discs and mp3s" when it comes to which will most impact western diets: eating insects, or going down the lab-grown meat route. "Lab-grown meat will probably win," he says. "We shouldn't be eating as much meat as we are for the environment, but everyone likes meat, therefore, [it's] the obvious way.

"I know they've already made a burger out of lab-grown meat," he continues. "I wonder if insects might be the one that almost made it..."

Spider disgust aside, there's little he actively hates, except for an absolute classic: "If people ask at a restaurant, 'Have you got any allergies?' I say, 'I don't like quiche'."

Jack Stein's World On A Plate by Jack Stein, photography by Paul Winch-Furness, is published by Absolute Press, priced £26.