Pork Sausage Rolls

Ingredients

• 1/2 brown/yellow onion (peeled and halved)
• 2 garlic cloves (peeled)
• 1 celery stalk (roughly chopped)
• 1 carrot (peeled and roughly chopped)
• 1 tbs olive oil
• 1/2 tsp celery salt (for family over 12 months)
• 1 1/2 tsp dried tarragon
• 1/4 tsp ground white pepper
• 30 g panko breadcrumbs
• 1 egg
• 500 g pork mince/ground pork
• 2 sheets puff pastry
• 1 extra egg (for brushing pastry)