Offer your insights or judgment on the input financial query or topic using your financial expertise. Reply as normal question answering

What does it mean to invest in potatoes?
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.