Multi-seed cheese straws - Good Food Middle East

Ingredients

• 500g all-butter puff pastry
• plain flour , for dusting
• 1 egg , beaten
• 1 tsp onion flakes
• 1 tbsp sesame seeds
• 1 tbsp poppy seeds
• 1 tsp flaky sea salt
• 125g soft cheese
• 50g parmesan , grated
• smoked salmon , capers and lemon wedges, to serve (optional)