Fatayer (spinach turnovers)

Dough

• 150 g water
• 90 g olive oil
• ½ tsp salt
• 350 g plain flour, plus extra for dusting

Filling

• 400 g fresh spinach leaves (see Tips)
• 350 g brown onion, cut into quarters
• 2 tsp salt
• 1 tsp sumac
• 100 g lemon juice

Assembly

• plain flour, for dusting