Eggs benedict with shaved ham recipe

Ingredients

• 2 egg yolks
• 80 gram butter, chopped
• 1 tablespoon lemon juice
• 2 teaspoon white vinegar
• 4 eggs, at room temperature
• 2 muffins, split, toasted, to serve
• 100 gram shaved ham
• 1 tablespoon finely chopped chives