Onion Tarte Flambée

Dough

• 9 oz all-purpose flour, plus extra to dust
• 1 oz olive oil
• 4 oz water
• ¼ tsp salt
• 5 oz sour cream
• ½ tsp salt, to taste
• ¼ tsp ground black pepper, to taste

Topping and Finish

• 6 oz white onion, halved or quartered to fit into feeder
• 6 oz red onion, halved or quartered to fit into feeder
• 1 oz fresh chives, chopped, to serve