In Japan, potato salad is one of the popular dishes at home. That's because even children can eat it deliciously and it is easy to make. There is theory that potato salad originated from Oliver salad in Moscow. Each country has developed, and now each country has its own recipe. For example, In America, a vegetable salad with plenty of vinegar and potatoes added, and in Shanghai, a salad made with milk, mayonnaise vegetables and diced apples mixed with potatoes. Even though it's called potato salad, each country has its own culture, just like a different dish! My mother often makes potato salad when she is wondering what to have for dinner. It doesn't take much time and it is so delicious. Previously, when my mother made potato salad, my father put sauce on it and eat it. My mother used to argue with my father, saying that the flavor of the potatoes was lost in the sauce. I like the flavor of potatoes too, so I couldn't agree with my father's action. But the...