Khao Kha Moo is not only a favorite of Thailand's Prime Minister (a celebrity chef), it's also one of those ubiquitous dishes served by street vendors throughout Thailand. If you think it's hard to make at home--it's not! The recipe below makes a wonderful khao kha moo but be sure you get the right piece of meat. Ask a butcher for a pork shank, fresh. You must get it "fresh" which means it has not been cured or smoked. Even if it's frozen that's fine just state "fresh" to denote that you don't want it already smoked or cured. Hock (cut from the shoulder) is also a cut that works fine. Try to get a front leg, as the back legs contain more fat and less meat.
For 4 Person(s)
Heat oil in a wok or large pan over medium heat. Add pork shank, and turn up the heat a bit. Fry until golden brown on both sides. Transfer the leg to drain on a paper towel.
Pound garlic, peppercorns, and corriander in a mortar and pestle until it becomes a fine paste. Set aside.
Place fried pig leg in a pot and cover with water. Add garlic paste mixture, cinnamon, star anise, black soy, thin soy, Golden Mtn, salt, palm sugar, 5-spice, and eggs. Bring to a boil then reduce heat, and cook for another 2-3 hours until tender.
While the pork is cooking, thinly slice the pickled mustard green, gently squeeze it to remove the pickling liquid, and rinse it one time in a colander. Then slowly boil it in a bit of water or chicken stock, about 1.5 cups, until water evaporates, and set aside.
Separately, pound 2-3 fresh Thai chile peppers in a mortar and pestle. Transfer to a small sauce bowl, add 1 teaspoon salt and 1/2 cup vinegar. This sauce should be served with the khao kha moo.
Serve the meat over steamed jasmine rice, topped with some pickled mustard green and the chile-vinegar sauce.