**NOTE I often make this in an electric hand blender with the whisk attachment **NOTE Mayonnaise lasts for longer than people think,easily up to 1 week. **NOTE Mayonnaise is such a fantastic basic sauce,add 3-4 cloves of crushed garlic and some chopped parsley for garlic mayonnaise;or try adding 1 tbsp of Ballymaloe Relish to make a really good sauce for burgers,steak sandwiches,chicken etc etc.Or add more mustard,and grated horse radish,and sugar (recipe above) to make horseradish mayonnaise - excellent with beef and smoked fish too!! A spoonful of sweet chilli sauce is a good mix too.The list is endless…