Examples from the Web for ottos
Perfumers use the ottos of the mint in the manufacture of mouth-washes and dental liquids.
"You see it isn't much of a task for me to move," he said, as they turned back in the direction of the Ottos'.The Hunted Woman|James Oliver Curwood
It is easy to draw a comparison between the Antonines and the Ottos which should shew nothing but unlikeness.The Holy Roman Empire|James Bryce
Melt the solid greases and oils together by a water-bath, then add the ottos.
Of course moisture must be excluded as much as possible, as the oils or ottos prevent only the bad effects of mould.