Step 1

In a large saucepan, cook onions in oil over medium heat until nicely golden, about 20 minutes, reducing heat if onions start to brown before they're soft.

Step 2

Meanwhile, whisk together the vinegar, mustard, spices and salt in a small bowl.

Step 3

Add garlic to onions and cook 1 minute, then add vinegar mixture and cook a minute more, stirring frequently.  Stir in coconut milk.

Step 4

At this point, you can add the pork, cover and simmer on the stove for 1 to 1 1/2 hours, until pork is tender, or add the pork to a pressure cooker, stir in the sauce, and cook on high pressure for 30 minutes. Let the steam release naturally. Top with cilantro.