First make the potato pancakes. Mix together the mashed potato, beaten egg and flour until smooth. Fold in the double cream, the mixture should resemble a thick porridge.
Melt the butter with the oil in a frying pan. Over a medium heat, place spoonfuls of the mixture into the pan.
Fry for 2 minutes until golden brown, then carefully turn and cook for a further 2 minutes, or until cooked through. Keep warm
Steam the asparagus over boiling water for 4 – 5 minutes, until cooked through but still retaining some bite.
Fry the bacon rashers until crisp
Place the pancakes on 4 plates. Top with the steamed asparagus, drizzle with the hollandaise sauce and grind over some black pepper.
Garnish with the rashers of streaky bacon