Phil Vickery's turkey bubble and squeak cakes recipe

Ingredients

• 25 g unsalted butter
• 1 small onion, peeled and finely chopped
• 450 g potatoes, cooked and mashed
• 350 g cooked British turkey thigh, chopped
• 300 g cooked cabbage or spinach, chopped
• 3 tbsp olive oil
• 1 handful of dry breadcrumbs
• 2 tbsp flour
• 1 egg lightly beaten
• 4 lightly poached eggs
• 1 jar of hollandaise sauce
• 1 bag of watercress
• 150 g French beans, cooked
• 1 pinch of salt
• 1 pinch of freshly milled black pepper
• 1 splash of vegetable oil for cooking