This documentary about the legacy of Marcella Hazan is currently showing on Apple and Amazon. Haven't seen it yet myself, but definitely will.
From Variety: If you can read, you can cook, and anyone who doubts that old maxim has Marcella Hazan as a compelling example to explain away. The woman regarded around the world (but most ardently in her adopted home of America) as the foremost authority on Italian cooking was no such thing when she moved to New York City as a newlywed science graduate at the age of 31 - indeed, prior to her marriage, Hazan had never cooked at all. Suddenly thrust into the unfamiliar role of housewife, and homesick for the flavors of her native Italy, she patiently taught herself with the aid of one dusty but comprehensive volume by venerable chef Ada Boni. The rest is history, as the amateur grew into the expert to whom others would eventually turn to educate themselves. "Marcella," Peter Miller's formulaic but enjoyable documentary, ultimately presents classic Italian cuisine as a mistress to whom even doyennes like Hazan are beholden.