This is a Garo dish. Pork spinach.
Make a rice powder solution by mixing it with 1½ glasses of water and keep it aside.
Cut the pork into cubes and wash it properly. Mix the pork with salt and pressure-cook in its own water (no need to add extra water). Remove it when it is cooked and transfer to an open cooking pan.
Chop the spinach, chilli and mix with the cooked pork. Then let it simmer on a slow fire for a minute.
Add cooking soda to it. The water in it will start rising. Continue keeping it on a low flame and stir it. When it gets dry, add water (as much as four glasses). Let it boil for a while.
Then pour the rice powder solution and keep stirring so that the slution doesn’t curdle.
Let it boil on a low flame and keep stirring, until the gravy is slightly thick.