hereinafter , embodiments of the present invention will be described in detail . a cooking method according to the present invention includes two aging processes performed under different conditions and two roasting processes . in particular , a raw meat is cut into pieces , each having an average diameter of 4 ˜ 10 cm and a weight of 70 ˜ 150 g and put in a salt - containing sauce for primary aging . the salt - containing sauce is a marinade containing refined salt , soy sauce , pepper powder , white sugar , and onion juice as main components . the aging time may be in a range of 24 ˜ 48 hours . the spices soak into the raw meat through the aging process . next , the surface of each of the raw meat pieces is coated with coating powder . when it is necessary to relieve the salty taste of the meat , the salt - containing sauce can be removed from the surface of the raw meat pieces before it is coated with coating powder . the coating powder is prepared by adding seasonings , such as refined salt , monosodium l - glutamate , red pepper powder , black pepper powder , garlic powder , etc ., into wheat flour or corn starch , which are main components . an appropriate mixing ratio of seasonings in the coating powder is shown in table 1 . an optimal mixing ratio of seasonings in coating powder determined through several times of test cooking is shown in table 2 . a hot seasoning may be further added to emphasize the hot taste . next , the raw meat pieces coated with the coating powder is subjected to secondary aging for a predetermined time to allow the coating powder on the surface of the raw meat to absorb moisture in the raw meat and form a coating powder layer . in this secondary aging process , the raw meat pieces on which the coating powder has been coated are maintained in a dark refrigeration space at a temperature of − 2 . 0 ˜ 10 . 0 ° c . for 1 ˜ 2 hours . alternatively , if necessary to cook quickly , instead of waiting for the coating powder layer to be formed by absorbing moisture in the raw meat , the coating power layer can be formed by spraying water on the coating power of the surface of the raw meat . however , for more crispy taste of the surface of the meat prepared according to present invention , it is better to wait for the coating powder layer to be formed by absorbing moisture in the raw meat through the secondary aging process . next , the secondarily aged raw meat pieces are roasted in an oven in a closed state at a temperature of 130 ˜ 270 ° c . for 7 ˜ 20 minutes . any type of cooking device , such as a gas oven , an electric oven , etc ., can be used provided that it has a closed space for heating . however , cooking devices using radiation heat or convection heat are preferred to cooking devices using heat conduction , like frying fans . in the cooking method according to the present invention , cooking devices using radiation heat or convection heat are suitable to uniformly heat the aged raw meat pieces of a predetermined size . next , the raw meat pieces are further roasted at a temperature of 130 ˜ 270 ° c . for 2 ˜ 5 minutes while supplying an air flow to the oven . in this process , air is flowed into the oven to evaporate moisture from the surface of the coating powder layer of the meat and exhaust the moisture out of the oven . this process facilitates the evaporation of moisture from the surface of the meat . if air is flowed throughout the entire roasting operation , i . e ., from the beginning to the end of the roasting operation , or if the duration of roasting the meat while supplying an air flow is longer than 5 minutes , too much moisture in the meat is evaporated and the meat texture becomes too tough or chewy . if the duration of roasting the meat while supplying an air flow is shorter than 2 minutes , a proper amount of moisture cannot be evaporated from the coating powder layer and the roasted meat is not crispy . the roasting time ranging from 2 ˜ 5 minutes can be varied according to the water content of the raw meat . the surface of the meat roasted through the above - described processes looks very similar to common fried chicken . in addition , the surface of the roasted meat is crispy while the inner flesh is tender and moist . although the surface of the meat cooked according to the present invention looks very similar to common fried chicken , the meat cooked according to the present invention has very different composition from the common fried chicken . in particular , since the coating powder layer on the meat is fried by oil contained in the meat through two roasting processes , its fat and cholesterol contents are markedly lower than those of common fried chicken , which is fried in cooking oil . in addition , since the oil in the meat comes out , the inner flesh becomes non - greasy , soft , and less tough . in conventional methods of cooking by frying , due to the repeated use of frying oil and the oxidization of the oil , cholesterol content increases . in addition , it is highly likely that foreign substance is incorporated into the oil during storage , and small fragments of previously fried foods remain , raising a hygienic problem . however , in the cooking method according to the present invention , such problems do not arise , and low fat , cholesterol , and calory food can be hygienically cooked . the two roasting processes in the cooking method according to the present invention may be performed in reverse order . in other words , the roasting process performed while supplying an air flow can be performed first . however , to accelerate the evaporation of moisture to obtain cooked meat with a crispy surface coating , it is preferable to perform the roasting process while supplying an air flow secondly . any kind of raw meat can be cooked using the above - described cooking method according to the present invention . examples of raw meat that can be cooked according to the present invention include : meats , such as pork , beef , etc . ; fowls , such as chicken , duck , goose , turkey , etc . ; seafoods , such as lobster , shrimp , shellfish , fishes , etc . for a high fat content raw meat , such as pork , bread crumbles may be added to the coating powder such that a larger amount of the oily component in the raw meat can be absorbed . as a result , a less greasy , tender , and moist cooked meat with a crispy coating can be obtained . as described above , in a cooking method according to the present invention , instead of frying a raw meat in boil , after coating the raw meat with a coating powder layer , the raw meat is roasted using oil contained in the raw meat while supplying an air flow for a predetermined duration to evaporate moisture in the meat and increase crispiness of the surface of the meat . the obtained cooked meat has low fat content and is not greasy . in addition , the surface coating of the cooked meat is crispy while the inner flesh thereof is tender and moist . in a nutritional aspect , using the cooking method according to the present invention , which does not involve frying in oil , low calory , fat , and cholesterol foods can be cooked , which complies with the currently spread healthy diet trend . in particular , when the cooking method according to the present invention is used to cook chicken , low calory , fat , and cholesterol , healthy cooked chicken , which is very similar to popular fried chicken , can be obtained . according to the present invention , a plate of chicken that has low trans fatty acid content and is good for health can be prepared . trans fatty acids in diet , which are generated as a result of partial hydrogenation of vegetable oils , have been implicated to cause or exacerbate most modern diseases , including heart disease , cancer , diabetes , obesity , immune dysfunction , and bone loss . the major form of trans fatty acid included in milk , dairy products , meat etc . is vaccenic acid ( trans - 11 , 18 : 1 ). table 3 shows the contents of vaccenic acid ( trans - 11 , 18 : 1 ) in the skin of chicken prepared to be served to a customer . the content of vaccenic acid ( trans - 11 , 18 : 1 ) in the skin of the plate of chicken prepared according to the method of present invention was about 4 . 25 %. however , in the case of comparative example 1 ( fried chicken cooked by frying in oil , company a ), the content of vaccenic acid ( trans - 11 , 18 : 1 ) was about 12 . 94 %. in the case of comparative example 2 ( fried chicken cooked by frying in oil , company b ), the content of vaccenic acid ( trans - 11 , 18 : 1 ) was about 6 . 12 %. a cooking method according to another embodiment of the present invention is the same , from cutting raw meat into pieces to aging the raw meat pieces with a salt - containing sauce , as the embodiment described above . when the aging process is completed , primary roasting is performed . in primary roasting , the raw meat pieces are cooked to an extent of about 30 % to about 70 % using steam or oven heat . for example , the raw meat pieces may be primarily roasted using a far - infrared radiation oven . when a far - infrared radiation oven is used , the temperature of a far - infrared bulb may be maintained at about 300 ° c . to about 550 ° c . in this case , the surface temperature of the raw meat pieces is maintained at about 30 ° c . to about 80 ° c . for about 10 to about 20 minutes . the primary roasting process sterilizes the raw meat pieces to some extent and removes oil from the raw meat pieces . in addition , water contained in surface regions of the raw meat pieces is partially evaporated . in the primary roasting operation , the water content of the raw meat pieces may be reduced to about 10 . 0 wt % to about 15 . 0 wt %. if the water content is less than 10 . 0 wt %, crispness of the surface of a coating powder layer of cooked meat may be reduced . on the other hand , if the water content is more than 15 . 0 wt %, the cooked meat may become tough . next , a coating powder layer is formed . the oil removed from surface regions of the raw meat pieces in the primary roasting operation enables coating powder to easily adhere the surface of the raw meat pieces , and thus forms the coating powder layer . examples of the coating powder are the same as described in the previous embodiment . in addition , the composition of the coating powder is not limited to the compositions suggested in tables 1 and 2 above . for example , wheat flour or corn starch may be partially or wholly substituted with one component selected from the group consisting of rice flour , barley flour , soybean flour , potato starch and sweet potato starch . next , secondary roasting is performed to finish cooking the raw meat pieces . the secondary roasting operation includes preheating a roasting utensil and placing and heating the raw meat pieces in the preheated roasting utensil . in the secondary roasting operation , the heating temperature may be in a range of about 130 ° c . to about 270 ° c ., and the heating time may be in a range of about 9 to about 25 minutes . the roasting utensil may include any type of cooking device for roasting in a closed environment , such as a gas oven , an electric oven , etc . for example , the roasting utensil may include heating wires in upper and lower racks where the raw meat pieces are to be placed so that the top and bottom surfaces of the raw meat pieces can be heated . in the secondary roasting operation , air may be made flow into the roasting utensil for about 2 to about 5 minutes . air flowing into the oven exhausts water vapor out of the roasting utensil , and thus facilitates the evaporation of water from the surfaces of the raw meat pieces . if air is made to flow throughout the entire roasting operation , i . e ., from the beginning to the end of the roasting operation , or if the duration of roasting the raw meat pieces while supplying an air flow is longer than 5 minutes , too much moisture in the raw meat pieces is evaporated and the meat texture becomes too tough or chewy . if the duration of roasting the raw meat pieces while supplying an air flow is shorter than 2 minutes , a proper amount of moisture cannot be evaporated from the coating powder layer and the roasted meat is not crispy . the roasting time ranging from about 2 to about 5 minutes may be varied according to the water content of the raw meat . the surface of the meat roasted by performing the above - described processes looks very similar to common fried chicken . in addition , the surface of the roasted meat is crispy while the inner flesh is tender , non - greasy and moist . although the surface of the meat cooked according to the present invention looks very similar to common fried chicken , the meat cooked according to the present invention has a very different composition from common fried chicken . in particular , since the coating powder layer on the meat is fried by oil contained in the meat through two roasting processes , its fat and cholesterol contents are markedly lower than those of common fried chicken , which is fried in cooking oil . in addition , since the oil in the meat is removed , the inner flesh becomes non - greasy , soft , and less tough . in conventional methods of cooking by frying , due to the repeated use of frying oil , it is highly likely that foreign substances are incorporated into the oil during storage , and small fragments of previously fried foods remain , raising a hygienic problem . however , in the cooking method according to the present invention , such problems do not arise , and low fat , and low calorie food can be hygienically cooked . while the present invention has been particularly shown and described with reference to embodiments thereof , the embodiments are for only descriptive purposes and are not intended to limit the scope of the invention . the scope of the invention is defined only by the appended claims . it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims .
provided are a method of cooking a raw meat and a plate of chicken prepared using the method . the plate of chicken is a healthy food and has a crispy coating and tender and moist inner flesh , like common fried chicken . the method of cooking a raw meat using oil contained therein includes : cutting the raw meat into pieces of a predetermined size and putting the cut raw meat pieces in a salt - containing sauce to age the raw meat pieces ; removing the salt - containing sauce from the surface of the primarily aged raw meat pieces ; putting the primarily aged raw meat pieces in an oven and roasting the raw meat pieces at a relatively low temperature such that juices come from the raw meat ; uniformly coating the surface of each of the juicy raw meat pieces with coating powder ; putting the raw meat pieces having the coating powder layer in an oven again and roasting the raw meat pieces ; and further roasting the raw meat pieces , with the oven open , while supplying ambient air flow into the oven , such that having moisture vaporized from the coating powder layer of the raw meat pieces be exhausted out of the oven .