1 leek, thinly sliced
1 onion, thinly sliced
2 tbsp snipped chives or chopped parsley
salt and freshly ground black pepper
2 tbsp olive oil
1 tbsp poppy seeds
250g/9oz gluten-free plain flour
125g/4陆oz unsalted butter, chilled and diced
75驳/2戮辞锄 Cheddar or gruy猫re, grated
375ml/13fl oz double cream
5 eggs, 4 whole eggs and 1 yolk (plus the yolk reserved from sealing the pastry)
2 tbsp finely grated Parmesan, or alternative vegetarian hard cheese
200g/7oz smoked bacon bits or lardons
100g/3陆oz frozen peas, defrosted
1 tsp white wine or cider vinegar