Rinse the rice thoroughly under water through a sieve until the water runs clear.
Add the rice to a large stock pot or Dutch oven with the vegetable or chicken flavoured stock, water, mirin, soy sauce, sesame oil, ginger, sea salt and white pepper. Bring the mixture to a boil over high heat, about 10 minutes. Once the liquid boils, stir the rice and turn the heat down to low. Place a lid on partially to allow steam to escape. Simmer the mixture for 65 to 70 minutes. Stir and scrape the bottom occasionally so the rice doesn’t stick to the bottom of the pot. It should look like a porridge when done. You can leave it off the heat with the lid on.
While the congee is cooking, you can make the pickled bok choy. In a large glass container with a lid, combine the hot water, rice vinegar, sugar, and sea salt. Give it a good whisk or stir until the sugar and salt has dissolved. Then add the chopped bok choy and mix well. Add the lid and place in the fridge. Let it pickle for at least 1 hour or do it 1 day in advance. Keep this in the fridge for up to 7 to 10 days.
To make the shredded king oyster mushrooms, take prongs of a fork and shred the large stem of the king oyster mushrooms. You can break up the mushroom caps as well into smaller pieces. Heat a large cast iron pan over medium-high heat (do not oil it), and once hot lay the shredded mushrooms into an even layer. Cook for 4 to 5 minutes without tossing at all, allowing most of the moisture to evaporate and the mushrooms to get some browning on them. Add a sprinkle of sea salt, toss, and then lay out in an even layer again. Cook for another 2 minutes, until nearly all the moisture is evaporated. Toss again, and lay out in an even layer. Cook another 2 minutes. Then add sesame oil and black vinegar and toss to coat well. Lower heat to medium and continue to cook another 2 minutes until all the liquid is absorbed and the mushrooms are quite browned but not burnt. Remove them from the hot pan and onto a separate dish or plate.
Once the congee is done you can portion the congee into a bowl. Top with shredded mushrooms, pickled bok choy, crispy fried onions, sliced green onion, and microgreens. Drizzle with chili oil, if desired.
I pan fried the Yo! Egg fried egg for a few minutes until heated through, sprinkled it with kala namak, and placed it gently on top of the congee.