I held a home party at my friends' house to experience sharing and invited six of my friends. On this research, I realized the difference of characteristic and preference of people. They are (including me) only ate their favorite food, for example, some people only ate tomato and avocado of the grilled vegetables, or served the eggs little more than the rice of unrolled-sushi and so on. Also, the round shaped food (cake and pizza) , we cut them by measure with our eyes, it means the size of each piece was not equal and some people  wanted to eat bigger one while other chose small one.

ate pickles using toothpicks

ate fruits with toothpicks.

shared salad with the tongue 

ate grilled vegetables with jikabashi (Japanese )-taking food directly from a communal dish with one's own chopsticks