“Welcome to California: Land of Wine and Food” reads the state’s tourist advertising campaign. And for once it’s no exaggeration.

If any region in the US lives up to such a title – simple yet proud - then it has to be the Golden State. It may not be the meatiest swath of the US, but Salinas is known as the “salad bowl of the nation” and the Central Valley as the “nation’s fruit basket”. Note, too, that it’s “wine” before “food” in the tag, after all 90 per cent of America’s wine is produced there, at more than 2,700 wineries.

What’s more, global culinary trends start there. Take farmers’ markets, independent farms and gardens growing specialty produce, eco-gastronomy and Slow Food. California has led the way, too, in producing an abundant range of affordable organic, locally grown produce.

California cuisine comprises two key ingredients. The dynamic, ethnic diversity in cities such as Los Angeles and San Francisco, with their international cuisine and world-class chefs, work side by side with the region’s agricultural producers. (Gordon Ramsay will have to be on his best seasonal behaviour when he expands his restaurant empire to LA in June.)

Alice Waters of Berkeley’s Chez Panisse is considered the pioneer of this fusion of world cooking styles with the freshest local ingredients.

“When my friends and I opened Chez Panisse in 1971 we thought of ourselves as agents of seduction whose mission it was to change the way people ate,” says Waters.

“We soon discovered that the best tasting food came from local farmers, ranchers, foragers and fishermen who were committed to sound and sustainable practices.”

Given the favourable climate, both literal and political, some restaurants even grow their own produce. The Parkway Grill in Pasadena has its own organic herb and vegetable garden, and at Zazu, a gourmet roadhouse restaurant in Santa Rosa, plenty of the menu comes fresh from the adjoining farm.

In typically enlightened Californian fashion, this concern to connect the pleasure of eating out with support of the local agricultural community has spawned a new West Coast concept: ‘locavores’. The aim is to eat only foods grown or harvested within a 100-mile radius of where one lives or is staying.

“It’s simple: we all realise that virtually anything can grow in California and we have a whole culture built around growing, buying and eating it,” says Napa Valley vintner Pat Kuleto of Kuleto Estate Winery.

To get a taste of locavore living, Market Foray tours in Santa Barbara show culinary tourists how to shop, buy and eat like a true local.

Otherwise, check out the piles of freshly unearthed vegetables at Wednesday’s giant farmers’ market in Santa Monica. Or the Ferry Building in San Francisco, a sprawling showcase for seasonal food and specialist cheeses, chocolates, breads, olive oils and wines. Break for lunch at Charles Phan’s nouveau-Vietnamese restaurant, the Slanted Door, whose menu makes artful use of the market’s bounty.