"I thought tamarinds were made to eat, but that was probably not the idea. I ate several, and it seemed to me that they were rather sour that year. They pursed up my lips, till they resembled the stem-end of a tomato, and I had to take my sustenance through a quill for twenty-four hours. They sharpened my teeth till I could have shaved with them, and gave them a 'wire edge' that I was afraid would stay; but a citizen said 'no, it will come off when the enamel does' - which was comforting, at any rate. I found, afterward, that only strangers eat tamarinds - but they only eat them once."

Source: Zane Grey, Max Brand, Owen Wister, James Fenimore Cooper, B. M. Bower (2017). “60 WESTERNS: Cowboy Adventures, Yukon & Oregon Trail Tales, Famous Outlaws, Gold Rush Adventures & much more: Riders of the Purple Sage, The Night Horseman, The Last of the Mohicans, Rimrock Trail, The Hidden Children, The Law of the Land, Heart of the West, A Texas Cow-Boy, The Prairie…”, p.4057, e-artnow