When I was doing my practical demo training yesterday I got told about a hot tip!!
If you are making mayonnaise and have forgotten to take your eggs out of the fridge, dont despair.....when you are first mixing the egg and mustard put the temperature on 37, this will bring everything in the TM bowl to room temperature. MIx for about 2mins (not 30secs as advised in the book)
Turn off the temperature and Then add your oil as per normal
Dont put your lemon juice or vinegar in until the last
It worked perfectly and I have had a few disasters with mayo!!!!