As the influence of the authorities' intervention in the foreign exchange market is fading, Geoff Yu, a senior strategist at Bank of New York Mellon, used the price of a Japanese fast food staple to accurately measure the extent of yen weakness. Yu created the Curry Pork Chop Index as an alternative to The Economist's Big Mac Index. He believes that compared to hamburgers like Big Mac, compared to the international price of curry pork cutlets, it better reflects how the Japanese people feel about the depreciation of the yen. On the global foreign exchange market on Wednesday morning, 1 US dollar was about 159.23 yen. However, according to Yu's calculation, after considering the purchasing power of yen reflected in the price of curry meals, 1 dollar should only be exchanged for 62.18 yen. This means that the foreign exchange market is greatly undervaluing the yen. In contrast, according to the Big Mac Index, which is based on the prices of McDonald's burgers in various countries, 1 US dollar should be converted to 80.30 yen. Yu said that if the goal is to match purchasing power with high-income countries, the index shows that the yen needs to be stronger. He calculated the price of CoCo Ichibanya, the world's largest curry restaurant chain. The company has about 1,500 branches around the world.

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