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what does it mean to invest in potatoes?
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comments discuss investing in potato futures. learn / ready about commodity trading or commodity futures. an investopedia article how to invest in commodities is a good start.  there are quite a few commodities offered for normal trade or as futures. potatos may not be offered on quite a few exchanges. found some here investing in commodities is fraught with quite a bit of risk, some like you have already pointed out. of course you can't eat all and have to sell.
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