Just buy a jar...
Right, so now you've made or bought your mayonnaise. What's next? Well, you could pretend to be Belgian and have chips (frites) and put your mayo on the side...
...but it doesn't have to end there. You can use your mayo for loads of other flavours. For example, mix a bit of wasabi into it. Oooh, wasabi mayo with furikake fries.
You could add tomato ketchup and a bit of cognac, etc, and make a Marie rose sauce for any kind of seafood cocktail. (Want a recipe?)
You could add sriracha - or any other hot sauce - to it and there you go. Another type of mayo.
The main point is, you don't have to stick to bog standard mayo. A jar of the usual stuff can be quickly transformed into something quite special.
