Sorry its late, completely slipped my mind.
Coffee comes up as a regular discussion point here. And there are many references to it in the old books. It was a very common drink of the time, and had to be carried into the mountains. Many men would write how good a cup tasted after having to go without for an extended period of time.
From Charles Larpenteur:
It was only by seeking for coffee in the warehouse, picking it up grain by grain out of the dirt,
that I now and then got a cup of coffee, without sugar; but it was a great treat notwithstanding.
From Osborne Russell:
July 4th I caught about 20 very fine salmon trout
which together with fat mutton buffaloe beef and coffee and the manner in which it was served up
constituted a dinner that ought to be considered independent even by Britons.
From Ruxton:
The absence of coffee he made
the theme of regret at every meal, bewailing his misfortune in not having at that particular moment
a supply of this article, which he never before was without, and which I may here observe,
amongst the hunters and trappers, when in camp or rendevous, is considered as an indispensable
necessary
From Gen. Thomas James
Chouteau invited me to breakfast with him, assuring me
that my horses, which were now out of sight, would be recovered. I partook with him of a dish
of coffee, the first I had tasted in twelve months, and of bread and other luxuries of civilization,
which brought before my mind all the comforts of home to which I had been so long a stranger.