Onion Tarte Flambée

Dough

• 250 g all-purpose flour, plus extra to dust
• 30 g olive oil
• 120 g water
• ¼ tsp salt
• 150 g sour cream
• ½ tsp salt, to taste
• ¼ tsp ground black pepper, to taste

Topping and Finish

• 200 g white onions, halved or quartered to fit into feeder
• 200 g red onions, halved or quartered to fit into feeder
• 30 g fresh chives, chopped, to serve