Chinese Pickled Mustard Greens (Haam Choy)

Name: Chinese Pickled Mustard Greens (Haam Choy)
Prep time: 1 h 15 min
Cook time: 30 min
Total time: 1 h 45 min
Cuisine: Chinese
Ingredients: 3 1/2 pounds Chinese mustard greens ((gai choy, weighed after trimming but before washing)); 1.5 ounces ginger ((peeled and sliced 1/4 inch thick)); 8 teaspoons sea salt ((about 2 1/4 teaspoons/13g per pound of greens)); 10 cups water; 1 1/2 tablespoons sea salt; 3 1/2 teaspoons sea salt ((1 teaspoon/6g per pound of vegetables)); 2.62 teaspoons granulated sugar ((2.62 teaspoons is 2 1/2 plus 1/8 teaspoon; 3/4 teaspoon/3g per pound of vegetables)); 7 tablespoons white vinegar ((2 tablespoons/30 ml per pound of vegetables))