Steam the sweet potatoes until cooked through.
Mince the garlic and onion and prepare mise en place.
Sweat the garlic and onion until soft and lightly caramelized.
Add the spices and bean pastes.
Add in the rinsed lentils.
Pour in enough water to just cover the mixture and braise.
Halve the sweet potatoes and run a fork through the middle.
Heap the lentils onto the middle, drizzle with diluted sour cream and scatter with cilantro leaves.