The oil is the triacylglycerol.
Yes, lecithin in the egg yolk is the emulsifier that emulsifies oil and vinegar/lemon juice to make a mayonnaise emulsion.
To prevent mayonnaise from splitting, emulsifiers like egg yolk, which contains lecithin, are commonly used. Lecithin helps stabilize the mixture by allowing the oil and water components to blend smoothly. Additionally, using a slow and steady incorporation of oil while whisking can help maintain the emulsion and prevent separation. Other stabilizers, like mustard or vinegar, can also contribute to the stability of mayonnaise.
It is only the egg yolk that contains lecithin which is the emulsifier that makes it possible to create the oil emulsion. Mayonnaise usually also contains vinegar or lemon juice (which are mostly water) to enhance the flavor. The egg white is also mostly water and it is pretty easy to successfully make "whole egg" mayonnaise. Perhaps, the white is traditionally left out because it has its own valuable uses in cooking other things.
Lecithin is good for the GI tract. It's consists of phospholipids, which are important components of the intestinal mucus layer. That is why lecithin is used to cure ulcerative colitis.
One can add herbs, garlic or extra mustard.
Egg yolk contains lecithin which is an emulsifier or surfactant which acts as a dispersal agentfor fat in water. I don't get the chemistry, but then, I don't have to get it
double
Mayonnaise is composed mainly of lipids, such as oil and egg yolk, which are a type of macromolecule. Lipids are important in providing flavor, texture, and consistency to mayonnaise.
double
Two pouches of tuna and two ounces of mayonnaise would make a double batch.
Eggs, vinegar and oil.
Eggs have emulsifying properties due to their high content of lecithin in the yolk. Lecithin acts as a surfactant, helping to stabilize and emulsify oil and water-based ingredients in recipes like mayonnaise and salad dressings. When beaten, the proteins in egg whites can also help create stable foams in dishes like meringues and soufflés.