My wife and I have been making our own mayo for several years now - she has made it most of the time, I just pitch in and do it on occasion. In the last few months, though, something in the world has changed and we’ve had problems with mayonnaise breaking.
A month or so ago, we thought maybe the eggs had changed and we tried a different brand. That worked. One time and not again. I volunteered to try to make some, thinking I want to see it myself. My first batch came out fine. Then I made another batch and turned that into Caesar dressing. Also fine.
On my third attempt, it broke and if there’s anything that I thought might have been different was maybe I adding the oil too fast. One moment it was looking like mayo and going fine, the next moment it broke and turned into an oily mess. I did an internet search on fixing broken mayo, did the trick (hand whisk another egg yolk with some of the broken mayo) and it worked.
This week, my wife made a batch for Caesar dressing, then had a batch that was going to stay mayo broke and the same “hand whisk another egg yolk” trick didn’t work. So we’re both seeing far more broken batches than we had for the previous few years.
Which leads to my question. I’ve never seen it talked about but a main part of making the oil and vinegar emulsion is that the egg yolks contain lecithin that helps the emulsion to form. So since lecithin is available in whatever quantity you’d want, is that helpful in fixing broken mayonnaise? Maybe more importantly, can using a bit of lecithin powder keep it from breaking?
It would be interesting if other people were having more issues with mayo breaking, too. Maybe something in what they feed the hens has changed and it’s affecting everyone.