Separation long-chain fatty acid or that salt and the emulsifier are contained, being the eating and drinking item, the said separation long-chain fatty acid or that salt and the emulsifier, there is a state of emulsification ones of oil-in-water, the eating and drinking item. With desirable execution configuration, as for this eating and drinking item, 0.01 weight % - 10 weight % separation long-chain fatty acid or that salt is contained. Being production manner of the eating and drinking item where flavor is improved, emulsification ones of oil-in-water it includes the process which adds to the food which is used for the eating and drinking item or the eating and drinking item, any said emulsification things, contain with separation long-chain fatty acid or that salt and the emulsifier and the water, also manner is offered and.遊離長鎖脂肪酸またはその塩および乳化剤を含有する、飲食品であって、該遊離長鎖脂肪酸またはその塩と乳化剤とは、水中油型の乳化物の状態にある、飲食品。好ましい実施形態では、この飲食品は、0.01重量%~10重量%の遊離長鎖脂肪酸またはその塩を含有する。風味が改善された飲食品の製造方法であって、水中油型の乳化物を飲食品または飲食品に使用される食材に添加する工程を包含し、該乳化物は、遊離長鎖脂肪酸またはその塩と、乳化剤と、水とを含有する、方法もまた提供される。