French researchers are using X-ray fluorescence spectroscopy to isolate and study each ultra-thin layer of paint and glaze da Vinci used to create the effect he was seeking, according to recent news reports.
By beaming x-rays on the Mona Lisa without removing it from the wall on which it is mounted in Paris' Louvre Museum, scientists found that da Vinci used a Renaissance painting technique known as sfumato, intricately mixing thin layers of pigment, glaze and oil to create the appearance of lifelike shadows and light. Scientists now believe that da Vinci used up to 30 layers of paint on his works.
While this may solve one mystery about the Mona Lisa, others remain, like: who is this enigmatic woman and why does she hold her subtle half-smile? To these questions we can add another: what did this mysterious woman and da Vinci like to eat?
According to one researcher who studied the culinary habits of Renaissance Italy, some favorites included Risi e Bisi, Saffron Risotto with Duck and Mushrooms, and Spinach Soup with Hazelnuts. Although those recipes would be impossible to duplicate today, this one for Mushroom Risotto from the New York Times might give you a sense of how and what Leonardo da Vinci liked to eat!
4 cups beef or chicken stock
1/8 teaspoon ground saffron
3 tablespoons unsalted butter
2 tablespoons olive oil
1/4 cup finely minced scallions
1/4 cup finely minced onions
1 pound fresh wild mushrooms, trimmed
1 1/2 cups Italian Arborio rice
Salt and freshly ground black pepper to taste
3/4 cup freshly grated Parmigiano-Reggiano cheese
Place stock in a saucepan and over medium heat bring to a simmer. Add saffron, stir, and simmer slightly. Meanwhile, in a saucepan over medium heat, melt 1 tablespoon butter in olive oil. When foam subsides, add scallions and onions and cook until softened and yellow but not browned. Add mushrooms and saute, stirring occasionally until liquid has evaporated.
Add rice to mushrooms, and cook, stirring to coat well, with butter and oil. Add approximately 3/4 cup of simmering stock to rice and mushrooms. Stir well and continue to cook, stirring occasionally, until rice has absorbed most of stock. Continue adding stock to rice by half-cupful adding only after rice has absorbed previous addition.
As cooking continues, stir more frequently. After 25 minutes, all the stock should be absorbed, and rice should be tender but still chewy. Remove from heat. Add salt and pepper to taste. Stir in remaining butter and 1/4 cup of Parmigiano-Reggiano. Serve immediately, passing the rest of the cheese.