The most important table etiquette in Japan is saying, “Itadaki-masu” before a meal and “Gochisou-sama” after a meal. These phrases mean thanks for the food and also indicate the beginning and the ending of a meal.
It is a Japanese custom to make some slurping noises while eating noodles such as Soba, udon, and somen. People say it tastes better if they make slurping noises.