My dear aunt Isa (Isabella Varsano) made this refreshing dessert many times for our family when I was growing up. She inherited the recipe from her mum, Costanza, who I remember fondly. I always knew her as Nonna Costanza, even if she wasn’t my Nonna but rather my cousins’ - Gaia and Sara - and this dessert took her name.
This is a brilliant recipe as you don’t need an ic