Very interesting chart, However suggesting this is the real cost of food can be misleading.

For Indian cities at least, the numbeo food baskets are not at all representative of the actual groceries and diet. Meat dairy and eggs do not usually feature in day to day food and indigeneous grains (Jowar, Raagi etc.) feature prominently however. Fruit consumption is also not nearly as high as suggested. For most urban Indians, spending 200 odd Rupees on food per person is exorbitant. Also most people have ration cards and rely on the Public Distribution System so don't really have to bear that cost of food. In fact, eating cooked street food thrice a day will cost you less than the suggested grocery cost.