Brine edamame According to kitchen official website, cold edamame means that edamame is boiled and soaked in prepared brine, so cold edamame can also be called brine edamame. Cold-mixed edamame is to cut off both ends of edamame, soak in two spoonfuls of salt after cleaning, cook edamame, drain it with cold water after cooking, cool it with salt water, pour it into edamame and put it in refrigerator for refrigeration.