In Japan, it is polite and respectful to finish your plate when dining out as it conveys appreciation for the food and its preparation. To do so mindfully, one should take smaller bites and pause between bites to better gauge how full they are getting throughout the meal. Additionally, offering remaining dishes before leaving and saying thank-you phrases like "itadakimasu" before meals and "gochisousama desu" after meals shows respect for those who have prepared and served the meal.