Good article. Thanks.I did come across this reference
https://delishably.com/sauces-preserves/3-Tips-for-Perfect-Home-Made-Mayonnaise-Every-Time
My bold.
But I have to say that given 28°C is 82°F (one of the easy ones to remember and convert), that seems quite warm to me. Much more than room temperature.![]()
70-80f (21.1 - 26.6c) makes sense to me.
It would explain the occasional fails I’ve had because where the mayo ingredients are put out to come up to ‘room temp’ in the winter is definitely below 21c (70f)
On the worktop near the window where I leave the ingredients is probably more like 17c, maybe lower, which in my mind as it’s in the house is “room temp”
I wouldn’t have expected it to have made such a difference but it certainly has so it’s good to read that

From now on I’ll make sure the ingredients are warmer!
You may have saved me from any more unexplained mayo making fails
