Step by step
In another bowl mix the various jams with the pine nuts. Divide the jam so that you have enough to make three layers.
Tips
The version of the Bolognese ‘pinza’ tart involves the use of Bolognese ‘mostarda’, a type of jam made with quinces.
Trivia
The ‘pinza’ tart is one of the most popular desserts of the Christmas period, especially in the province of Bologna.