Taiwanese Beef Rolls with Tender Shank and Green Onion Flatbreads

Ingredients

• 1 1/2-2 kg beef shank without bone
• 2 chunks fresh ginger
• 1 liter water, with extra for initial boil
• 10 g rock sugar (or 2 teaspoons normal sugar)
• 1 small stick of cassia cinnamon
• 1 dried bay leaf
• 1 pod of star anise
• 1 tiny bit of dried tangerine peel
• 3 whole cloves
• 1 teaspoon Sichuan peppercorns
• 1 teaspoon white or black peppercorns
• 3 garlic cloves, crushed
• 2 scallions, chopped into big pieces
• 3 tablespoons Shaoxing wine
• 3 tablespoons light soy sauce
• 1 tablespoon dark soy sauce
• 6 ready-made scallion pancakes
• Neutral oil for cooking
• 1 medium cucumber, cut into thin strips
• 3 scallions, cut tiny
• 3 tablespoons cilantro, cut small
• 2-3 tablespoons hoisin sauce