Beef olives

Ingredients

• 500 g beef round (cut into 8 very thin slices)
• 2 tbsp olive oil
• 1 tbsp black peppercorns (coarsely crushed)
• 1 onion (thinly sliced)
• 2 stalks celery (sliced)
• 400 g new potatoes (scrubbed and cut into 5 mm slices)
• 2 carrots (peeled and sliced)
• 600 g tomatoes (chopped)
• 1 1/4 cups diluted salt-reduced or homemade beef stock
• 1/3 cup dry sherry
• 1 bay leaf
• 2 tbsp fresh parsley (chopped)
• 15 g dried porcini mushrooms
• 1 small onion (finely chopped)
• 1 garlic clove (finely chopped)
• 200 g cremini mushrooms (finely chopped)
• 1/4 cup fine fresh breadcrumbs ((made from day-old bread))
• 1/3 cup fresh flat-leaf parsley (finely chopped)
• 1 tsp dried thyme
• 1 lemon (zest finely grated)
• pinch cayenne pepper