Shredded lamb burger with rosemary wedges

Ingredients

• Shredded lamb burger
• 1 tablespoon vegetable oil
• 500 grams lamb shanks
• 400 grams diced tomatoes
• 1 cup beef stock
• 1 onion, sliced
• 1 clove garlic, thinly sliced
• 2 red capsicums, seeded, thickly sliced
• 1/4 cup whole-egg mayonnaise
• 1 tablespoon tahini
• 1 tablespoon lemon juice
• 6 turkish-style rolls, halved, toasted
• 2 cups rocket leaves
• Rosemary wedges
• 2 large potatoes, peeled, sliced into wedges
• 2 tablespoons olive oil
• 1 tablespoon rosemary sprigs
• 2 teaspoons salt flakes