The present invention allows to take rose petals and barley sprouts, which are repositories of nutrition and various medicinal effects; to show beautiful colors by manufacturing powder by freezing and drying at a low pressure and mixing with natural vinegar, then aging so as to utmost maintain or improve the nutrition and characteristic colors; to obtain digestion acceleration and other effects by zymogenesis during the aging process; to provide an attractive taste as food by mixing vinegar and rice syrup; and to obtain effects of enhancing nutrition and effects. The present invention relates to a high nutritional rose petal powder and a barley sprout powder, which allow to enhance a visual effect and dignity of food by the contrast of the colors of the rose petal dressing and the barley sprout dressing, and to obtain a supplementary synergic effect in nutrition and effects; to a manufacturing process of dressings; and to a composition thereof. According to the present invention, the manufacturing process is optimized to supplement and enhance the effects of source materials so as to enable intake of balanced nutrients of various vitamins and various minerals, and a healthy life by intake of organic food having effects of anti-aging, growth promotion and prevention of various diseases. The present invention provides a manufacturing process and a composition thereof, which enable petals and leaves to be used for food by having a taste, flavor and color attractive to food. Furthermore, the composition of dressings of the present invention is able to easily be used as a vegetable dressing, a sauce or various garnish for fishes, meat, etc. at home, to enhance the taste and nutrition by adding various ice cream and decorations, to be used as beverage by diluting or adding the composition, and to be utilized as a material for various cosmetics and a herbal medicinal material. Furthermore, in the case the manufacturing method is applied to other plants, various food can be