Fry the onion, garlic, lemongrass, ginger, cumin, coriander, ground cloves and peppercorns in a dry frying pan for until fragrant (4-5 minutes).
Remove the pan from the heat and set aside to cool.
Blend the spices in a food processor, then add the anchovy paste, sugar and oil and blend until smooth. Set aside.
For The Curry
Heat a large non-stick frying pan and brown the meat until golden brown set aside in a large oven safe dish with the potatoes & onions.
Add the massaman paste, cilantro/coriander stalks and ginger to the frying pan, then fry for a few minutes until fragrant.
Stir in the coconut milk and bring to a boil.
Season with the lime & lemon juice, and fish sauce, add the lime leaves, then pour the sauce over the meat, onion and potatoes, cover and bake for 2 hours.
Serve on rice sprinkled with the chopped cilantro/coriander leaves.
Notes
The secret cooking perfect Thai curries is to use plenty of aromatics, like onion, ginger, and garlic.
Choose full-fat coconut cream (thick if you can find it) for amazing richness.
Finishing with just a little bit of rice vinegar and sugar adds brightness and elevates the flavor.
Feel free to change up the meat to whatever braising meat you like best.