Provided is a high-calorie nutritional composition that has a good taste and stable properties. The nutritional composition contains a protein source. The protein source of the nutritional composition contains whey proteins and whey peptides. In the nutritional composition, the ratio of the sum of the whey proteins and whey peptides to the total weight of the protein source is 80 wt% or greater. The protein energy ratio of the nutritional composition is 16% or more and less than 50%. The nutritional composition is acidic. The nutritional composition has a caloric density of 100 kcal/100 ml or greater.本發明提供一種具有良好的風味及穩定的物性,且為高卡路里的營養組成物。營養組成物係含有蛋白質源。營養組成物的蛋白質源係含有乳清蛋白質及乳清胜肽。乳清蛋白質的重量與乳清胜肽的重量之合計相對於營養組成物的蛋白質源之總重量的比率為80重量%以上。營養組成物的蛋白質能量比為16%以上且未達50%。營養組成物為酸性。營養組成物係具有100kcal/100ml以上的卡路里密度。