This recipe is for plain ole deliciously tart mayo. I had a hard time in finding a "plain" mayo recipe and experimented with various ones until I developed this one. I have included some optional items that make for a different taste. Enjoy! Since our family consumes a lot of mayo and store bought mayo has the "bad" fats, I created this mayo recipe with the intent for it to be heart-healthy and high in mono-saturated fat... you need to decide for yourself if you think it is heart healthy. Health experts are telling us to eat more mono-saturated fat, less poly-unsaturated, little saturated fat and no trans-fat. In very simple non-technical terms: mono-saturated fat increases Good Cholesterol (HDL) and decreases Bad Cholesterol (LDL); poly-unsaturated fat decreases both HDL and LDL; saturated fat increases LDL; and trans-fats decreases HDL and increases LDL. So the primary "good" fat is mono-saturated fat. There are three common oils that are "good" for increasing mono-saturated fat... almond, olive and canola. Almond oil is very tasty and appears to be marginally higher in mono-saturated fats than olive oil... but is much more expensive. Olive oil is higher in mono-saturated fats than Canola... but the taste of virgin olive oil can overwhelm many recipes including mayo. Canola oil does not have much flavor to me or at least not a good flavor. I chose Bertolli Extra Light Olive Oil because the flavor is mild and comparable to almond oil and much less expensive if you buy it at Sam's Club or CostCo. Eggs and egg yolks are an area of disagreement by the "food police".