Beat together pate and butter until smooth, add remaining ingredients except egg yolk and milk, beat again.
2
Finely dice the onion and bacon and gently saute until onion is soft, allow to cool and add to the liver mixture. Mix well.
3
Cut puff pastry into 8cm rounds with a pastry cutter, spoon teaspoons of pate mixture into the center of each pastry round, brush edges of pastry with combined egg yolk and milk.
4
Fold pastry rounds in half, pinch edges together well to form mini 'pasties'.
5
Put on greased oven trays, brush with remaining egg yolk mixture, and bake in hot oven 10 minutes until golden brown.