• 2 egg yolks
• pinch of salt
• 150 ml sunflower oil
• 150 ml olive oil
• 1 tbsp white wine vinegar
• 2 tbsp Dijon mustard
• pepper

Beat egg yolks with salt. Combine oils in a jug. Gradually add 1/4 of the oil to the beaten egg, one drop at a time, beating constantly.

Beat in vinegar, then add the rest of the oil slowly whilst beating. Stir in mustard and season to taste.