Savings: Potato is cheaper than rice, while the prices of barley and rice are about the same.
Remember this: If you’re accustomed to eating rice, it may take a little time to get used to eating barley and potato. However, barley in particular is a very good substitute for rice in many dishes.
Reducing your carbon footprint: Replacing rice with barley or potato three times a week reduces your carbon footprint by the equivalent of 60 kilometres of driving. The savings come when the greenhouse gases caused by rice cultivation decrease and you eat local food rather than products transported over long distances.