Turkish-style flatbread - Salamanca Fresh

Ingredients

• 1 small red or brown onion (or 2 shallots), half thinly sliced, half finely chopped
• ½ lemon, zest and juice
• 1 pinch caster sugar
• 250g leftover cooked meat (beef, lamb, chicken, or mince)
• 3 tbsp tomato paste
• 1½ tsp chilli flakes (or a mild chilli spice blend)
• 1 tsp ground cumin
• A handful of soft herbs (like parsley, chives, coriander or basil) — most finely chopped, a few left whole
• 1 ready-made pizza base (Roman-style or thin)
• Extra virgin olive oil, for drizzling (optional)