How to Make It
In a large bowl, toss the cauliflower, carrots, cucumber, green beans, shallots and garlic with 1 tablespoon of salt. Let stand for 1 hour. Rinse the vegetables and squeeze gently to remove excess water.
In a medium saucepan, combine the vinegar, sugar, chiles, bay leaves, coriander and cumin with 1 cup of water and 2 teaspoons of salt. Bring to a boil, stirring to dissolve the sugar and salt. Remove from the heat and add the vegetables. Let cool completely, about 1 hour.
Season the pork belly with salt and pepper. In a large, deep skillet, heat the olive oil. Add the pork and cook over moderately high heat, stirring occasionally, until the fat starts to render and the meat is browned, about 8 minutes. Add the garlic and cook for 30 seconds. Carefully add the wine and bring to a boil. Cover and simmer over moderately low heat until the pork is very tender, about 20 minutes. Using a slotted spoon, transfer the pork to a serving bowl. Discard the fat and cooking liquid.
Drain the pickled vegetables, reserving 1/4 cup of the brine; discard the chiles and bay leaves. Add the drained pickled vegetables to the pork. In a small bowl, whisk the reserved pickling liquid with the mustard, then stir the mixture into the pork and vegetables along with the olives. Mix well and serve.
Datu Puti is Filipino cane vinegar. It's available from amazon.com.