Optimum Drinking Temperature of a beverage or liquid based food product, in particular an average size (220-300ml) cup of tea. This temperature preference is subjective and varies from person to person but is widely considered to be 60+/-8.3 degrees C (140+/-15 degrees F).
As a Warning/Reminder:- "Dude, it's reaching O.D.T" -or simply- "O.D.T!"
When remembering you have tea just before it's cold:-
"It's in the lower regions, but still O.D.T." -or- "It's still drinkable, but I missed O.D.T."
When testing if the tea is ready for drinking:- "Not quite O.D.T yet, give it a minute." -or as an advisory- "It's in the upper realms but still O.D.T, I suggest you get involved."