Osso buco tortellini | Gourmet Traveller

Ingredients

• 600 gm osso buco (about 2 pieces)
• For dusting: seasoned flour
• 2 tbsp olive oil
• 1 small onion, finely chopped
• 1 stalk celery, finely chopped
• 1 small carrot, finely chopped
• 2 cloves garlic
• 1 tbsp tomato paste
• 60 ml red wine (¼ cup)
• 300 ml beef stock
• 2 tbsp finely grated lemon rind
• ¼ cup coarsely chopped flat-leaf parsley
• ½ qty fresh pasta
• 1 egg, lightly whisked
• 60 ml dry white wine (¼ cup)
• 2 tbsp lemon juice
• 1 lemon, zested rind only
• 100 gm cold butter, coarsely chopped