Gently boiled capon served with its broth and mostarda is a refined northern Italian tradition. This lean high protein mediterranean dish is ideal for family holiday meals.
Rinse the whole capon thoroughly under cold water and pat dry; place in a large stockpot.
Add onion, carrots, celery, parsley, black peppercorns, bay leaves, and salt to the pot with the capon.
Pour in enough cold water to cover the capon by at least 2 inches (about 16 cups), then bring to a gentle simmer over medium heat.
Once simmering, reduce heat to low and skim off any foam or impurities that rise to the surface. Continue to gently simmer uncovered for 3 to 3.5 hours, adjusting heat to maintain a slow bubble.
Remove the capon carefully and let it rest for 15 minutes before carving. Strain the broth and serve the sliced capon with some broth and a generous spoonful of mostarda on the side.