You must leave a "Flavor Report." This is not a Yelp star rating. It is a three-sentence haiku of critique.
必要なら、目的別（レストラン評価テンプレ、食メモフォーマット、ソーシャル投稿用ショートテキスト）に具体テンプレを作りますか？ bishokuke no rule
In a proper Japanese multi-course meal (Kaiseki), and in the logic of a Bishokuke, a meal is not finished until the very last grain of rice is eaten. Leaving food behind is considered the ultimate insult to the ingredient. You must leave a "Flavor Report