Because ten kilograms of salted duck eggs usually put about two kilograms of salt, then thirty salted duck eggs are about five kilograms, so you can put about one kilogram of salt.

Duck' segg (also known as duck, duck egg, Taiping, duck spring, green husk, etc. ) is the egg of a domestic duck, which can hatch ducklings. It mainly contains protein, fat, calcium, phosphorus, iron, potassium, sodium, chlorine and other nutrients.