If you have an immersion blender, making mayonnaise without sugar in it is very easy:

https://www.seriouseats.com/two-minute-mayonnaise

(And it tastes way better than commercial mayo!)

I love this author's recipes; it's the opposite of the normal recipe-preamble-slop. All of the stuff before the actual recipe is relevant information. In more complex recipes, he goes over the testing and process that led to the finished recipe. It's a wonderful view into the world of recipe creation.