Marinate pork in all the ingredients written below pork.
Heat oil and add the thinly sliced onions, jalapeno, garlic and ginger and cook it in medium heat for about 10 minutes while stirring till onion looks light golden brown. Do not burn it. Very important to use a heavy bottom saucepan or cast iron. Then add the marinated pork mix around so spices get cooked in the oil for few more minutes, then add a cup of water and cook in medium heat for about 40 minutes. Stir often and if needed add more water.