Chicken Brodo with Mushroom and Mascarpone Tortellini

Ingredients

• 2 chicken carcasses
• 1 each onion, carrot and celery stalk, coarsely chopped
• 1 garlic head, halved horizontally
• 10 gm dried porcini mushrooms
• 6 thyme sprigs
• 8 small Swiss brown mushrooms, thinly sliced
• 1 bunch spinach, trimmed
• To serve: shaved parmesan
• Mushroom and mascarpone tortellini
• 175 gm field mushrooms, coarsely chopped
• 4 golden shallots, coarsely chopped
• 2 garlic cloves, coarsely chopped
• 2 tbsp olive oil
• 150 gm mascarpone
• 2 tbsp each finely chopped thyme and flat-leaf parsley
• Finely grated rind of 1 lemon
• 1 quantity egg-yolk pasta dough
• For brushing: eggwash