Olive oil was advertised in the North China Daily News only. This suggests that Chinese consumers did not use olive oil for cooking, especially because it was used for salad dressing. The absence of olive oil in the Chinese newspaper Shenbao further supports Carl Crow's observations on the Chinese diet, precisely the lack of fresh fruits and vegetables.* In the North China Daily News, advertisements for olive oil specifically appealed to the French (Nicoise) origin of olive.
* Source: Crow, 1937 : 218-230.
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