BBC Food - Recipes - Buttermilk crumpets with black pudding, poached egg, and bacon and chive hollan

Ingredients

• 225g/8oz plain flour
• 1 x 7g sachet dried fast-action yeast
• 150ml/5floz buttermilk
• 175ml/6fl oz warm water
• 1 tsp salt
• 1-2 tbsp light olive oil
• 125g/4½oz butter , melted
• 2 tsp lemon juice
• 2 tsp white wine vinegar
• 2 free-range egg yolks
• salt and freshly ground black pepper
• 4 rashers streaky bacon
• 2-3 tbsp chives , finely chopped
• For serving
• 2 tbsp white wine vinegar
• 4 free-range eggs
• 1 tbsp light olive oil
• 12 slices black pudding