Don't have sunflower oil? Try another neutral oil like canola or vegetable oil.
Do not use coconut oil! It will clump in the cold mixture and make the mayo runny.
Do not use olive oil- if you want a mayo result.
Use olive oil if you want an aioli, but add a couple of cloves of garlic to the blender.
Aquafaba is the liquid from cooked beans. Strain your cooked beans and save the aquafaba for lots of wonderful recipes like this one.
Try to use a light color bean like chickpeas or white beans for this, black bean or pinto bean aquafaba doesn't look as visually appealing.
If you do not want to cook beans use the liquid that is in a can of beans for this recipe. (Although you can save some money and reduce your sodium if you cook your own beans rather than buying them canned)
If you do not have white wine vinegar sub it with apple cider vinegar, if you don't have that you can use standard white vinegar.
Experiment and try it with rice vinegar for a 'sushi' like flavor
The purpose of the vinegar is to increase the acidity, experiment with homemade vinegars of various kinds aioli
Black salt adds a depth and a slight egg flavor to the mayo. It is highly recommended but in a pinch you can swap it out for a salt of your choice.