Press sauté and add the coconut oil to the pot and once it melts, add the mustard seeds. When the mustard seeds begin to sizzle, add the onions and sauté for 7-8 minutes, or until they start to brown.
Add the garlic, ginger, serrano pepper, curry leaves, spices and stir, then add the beef roast, coconut slices, and lemon juice.
Secure the lid, close the pressure valve, and cook for 1 hour at high pressure.
Naturally release pressure.
Open the lid and using two forks, shred the meat. If the meat released a lot of liquid, press the sauté button to boil off any extra liquid.