The recent surge of interest in the health and nutritional benefits of tofu has caught the attention of the largest player in the global fast-food industry.

In an effort to reverse a downward profits trend and shed its image as "a standard-bearer of deflation," McDonald's Co. (Japan) Ltd. has revised its menu, introducing new products that the company hopes will strike a national culinary chord.

Among these, since late April, the new menu offers otofu sando -- the first time McDonald's has used tofu in a patty, and a rare move for any burger chain.