If you take an egg yolk, some crushed garlic and maybe 1 cup of olive oil, drizzle the oil very slowly while stirring for maybe 20 - 30 minutes, you'll get Mayonnaise, which is the same as.... Aioli.
And if you take some (good quality) Mayonnaise add some ingredient to it, you'll have a very fast Aioli, done in a couple of minutes!
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Aioli goes very well with everything, but I think it's best with grilled fish or chicken (Rotisserie chicken too!). But it is also delicious with just crusty bread or even vegetables (grilled, steamed or raw). Put some on a piece of toasted bread and let it float in a bowl of soup (especially fish or seafood soup but any soup will do) and see what happens....
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This recipe is for super fast Aioli. It's up to you to add the herbs (Parsley, Basil, Dill) that you like or spices (Cayenne, Sriracha, etc). The result is always good, so go ahead and experiment!!
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PS: Don't use less than 1/2 cup of Mayo.....you will kick yourself for not making more!