to the mid-nineteenth century, mint hay was boiled in water over
a large fire. The peppermint or spearmint oil floated to the top
and was skimmed off by hand.
1846, mint growers in New York and Michigan developed the "steam
hay was once pitchforked into eight feet high stationary tubs
and then stomped down to avoid the channelization of steam.
F. Stroud, the manager of the A. M. Todd plantation at Mentha,
Michigan, invented the first portable mint stilling tubs in America.
1950s mint farmers were using "choppers" to blow mint hay into
tanks on the back of trucks.
the widespread use of portable units, the old stationary round
tubs units have become archaic relics; only a few still remain
the mint industry is "a heritage worth recognizing"!