We analyzed the dietary records at a Zen monastery from the view point of nutritional intake and food ingestion. The mean levels of the total energy intake and protein and fat were 1,119±139kcal, 27.3±5.0g, and 13.1±5.3g, which were significantly lower than the results from a national nutrition survey. The amounts of the other nutrients had the same tendency. We especially recognized the influence of the diet which follows the discipline of avoiding meat and fish, as the remarkably low intake of vitamin B₁₂ revealed. Based on the calculated results of the intake of food it was revealed that no animal products were consumed. The intake of cereal, mushrooms and seaweed almost met the objective, which were extremely better than any other food groups. There was a tendency that rice and barley rice were eaten for yakuseki (dinner). Shiitake and shimeji, which were highly applicable, were used in various dishes for yakuseki. Konbu was the most applicable seaweed for shojiki (breakfast), chujiki (lunch) and yakuseki.