Do you know Bologna's iconic Simili Sisters?

Their cooking school, Marcella Hazan and a lemony filled pasta with radicchio and mascarpone

When I interviewed food writers and editors recently for an article on favourite Italian cookbooks, Angela Frenda, the editor of Italy’s Corriere della Sera’s food liftout, “Cook”, said the books by the Simili sisters would be hers. Of course, missing from my shelf, I bought one right away. Margherita and Valeria Simili, twins, were born in 1936. They g…