Slice the bread into slices 1 cm thick, place under the grill and toast for a few minutes. In a bowl, use a fork to mix the mascarpone with the Gorgonzola, and season with pepper. Boil the vinegar and simmer for about 8 minutes or until the vinegar has reduced by a third and has a syrupy consistency. Drain the cherries from the syrup and cut them in half. Lastly, spread a teaspoon of Gorgonzola cream on each bruschetta, arrange a few amarena cherry pieces on top and season with a drizzle of balsamic syrup. Serve immediately, preferably with a fresh-tasting, aromatic white wine.