Closet chef Jake Gyllenhaal is developing a new organic restaurant venture with top cook Chris Fischer.

Sources claim the movie star once promised himself he’d open a top-end eatery if his acting career took off by the time he was 30. He’s 27.

And Gyllenhaal, who has made regular appearances on top chef Mario Batali’s hit US cookery show ‘Molto Mario’, is getting serious about cooking up a restaurant.

A pal tells America’s ‘Life & Style’ magazine that Gyllenhaal and pal Fischer are looking at real estate in Los Angeles - with a view to opening their own place.

The insider says, “Cooking is his (Gyllenhaal) big hobby and his passion.”

Reports suggest Gyllenhaal is even planning a summer vacation cycling tour of food-lovers mecca Tuscany, Italy with his girlfriend Reese Witherspoon - to seek inspiration for his new restaurant.

He’ll be the latest in a long line of Hollywood stars who have opened restaurants - Morgan Freeman, Sandra Bullock, Jeri Ryan, Ashton Kutcher and Tara Reid are just some of the celebrities who have tasted success as restaurateurs.