Both mayonnaise and Aioli are creamy blends or emulsions, they slightly differs. With mayonnaise, is made from using canola oil while Aioli on the other hand is made from olive oil. Although both sauce may appear similar, you can simply tell its difference in terms of its taste and flavor. Also, Mayonnaise is made by egg yolk, lemon juice or vinegar and as mentioned canola oil. Meanwhile, Aioli is made by either crushed or mashed garlic, and oil such as olive oil.