Carmelo Chiaramonte was caught in possession of two large marijuana plants and 1kg (35oz) of Indian hemp, police said.
Cannabis-infused wine, olives, coffee and tuna were also seized from his home near Catania in eastern Sicily.
Mr Chiaramonte described himself as an “agro-food consultant for third millennium cuisine”, Italian newspaper La Sicilia reported.
The 50-year-old chef, who lives in the village of Trecastagni, at the foot of Mount Etna, has been released pending trial.
Known as a connoisseur of Sicilian cuisine, Mr Chiaramonte is a chef at the Katane Palace Hotel restaurant in Catania.
One of his shows was called Immoral Recipes and Aphrodisiac Foods, the newspaper said.