I’ve made this numerous times now have had success every time. Use a magic mix food processor and always add roasted garlic. My family absolutely love this mayonnaise.

Absolutely amazing recipe. I've made it few times and and it tastes better each time. I was a bit skeptical about making it after reading some negative comments but it worked out really well. Few things you need to remember:
- you have to make ingredients work for you. Everybody uses different size eggs, meaning you have to adjust the recipe for the size of the eggs you're using. I used 4 instead of 3
- make sure all ingredients are at room temperature. Cold yolks are not gonna mix well with avocado oil, leaving your mayonnaise quite runny
- don't use a high speed mixer, preferably a hand blender (at least in my case high speed mixer made it runny but it's come out perfect using hand held blender)
- adjust the amount of avocado oil. Everybody uses different quality oil, therefore use the amount that makes your mayonnaise as thick or as runny as you prefer (I only used 1 cup for this recipe)
- and finally, add some sugar (or other sweetener of your choice). I found this recipe on the sour side to my taste, adding sugar balanced it out and brought it to a completely higher level

Hope this helps. Don't just dismiss a recipe only because it hasn't worked, remember we all use different quality products and different brands, therefore each recipe has to be adjusted a little bit.