The key to longevity appears to be sticking to a daily routine.

From The Guardian:

Morano’s extraordinarily long life began on 29 November 1899...

She attributed her longevity to leaving her husband in 1938 shortly after the death of her only child at the age of seven months, and to the inclusion in her daily diet of two raw eggs and a little raw minced meat. When she was 20, her doctor had told her she was anaemic and that such a diet would improve her health.

Bava, her doctor for 27 years, said Morano rarely ate vegetables or fruit. “When I first met her she ate three eggs a day, two raw in the morning and then an omelette at noon, and chicken at dinner.”

Also from The Guardian:

A Spanish woman, Ana Vela, 115, who was born on 29 October 1901, is the oldest European and the fourth oldest person in the world, according to the GRG...

Speaking to El País last summer, Vela’s daughter said there was no secret to her mother’s extraordinarily long life. “She liked a glass of semi-sweet wine with her meals, but she was never one to drink a lot. She ate everything: meat, fish, vegetables. Her diet was very normal – just home-cooked stuff.”