이 발명품은 무연 보존 오리알을 만드는 방법과 관련이 있다. 생오리알을 물, 소금, 수산화나트륨, 탄산칼륨, 탄산나트륨, 5향수분말, 홍차분말, 황산아연 등으로 구성된 용액에 넣고 약 100시간 동안 담근 뒤 보존된 오리알을 얻는 것이 특징이다. 보존 오리알 생산방법은 원가가 저렴하고 시간도 짧으며 보존 오리알에는 납 등 독성물질이 들어있지 않다.
The invention relates to a method for making lead-free preserved duck eggs. The method is characterized by comprising the following steps of: putting fresh duck eggs into a solution consisting of water, salt, sodium hydroxide, potassium carbonate, sodium carbonate, five-spice powder, black tea powder, zinc sulfate and the like, soaking the duck eggs for about 100 hours, and thus obtaining the preserved duck eggs. The method for producing the preserved duck eggs is low in cost and short in time, and the preserved duck eggs do not contain toxic substances such as lead and the like.