Slice off both ends of the daikon radish. Rinse and scrub under tap water. Pat dry and use a peeler to peel off the outer skin. Dice it to cube shape, about 1 to 1 ½ -inch cubes.
Dice the chicken to 1 ½ -inch bite sizes. Slice off the bottom end of the mushrooms and break them to pieces, if using. In a small bowl, make a slurry with arrowroot starch and 1 tbsp water.
Preheat a large stir-fry pan or Dutch oven over medium heat until it feels warm when placing your palm near the surface, about 2-3 inches away. Add the oil, chicken, ginger, and 1 tsp salt. Saute over medium-high heat for about 3 minutes.
Add stock, daikon radish, and mushrooms. Make sure the radish cubes are in contact with the liquid. Cover with a lid and bring it to boil, about 3-4 minutes.
Then lower the heat to medium-low and simmer for 15-20 minutes or until the daikon turns soft and can easily be poked through with a fork or chopstick. The color will turn from pale to translucent. Stir the pot periodically to ensure even cooking.
Season with yuzu juice and coconut aminos. Stir the slurry one more time before adding it to the pot. Gently toss for 30 seconds to thicken the sauce. Off heat, taste and add more salt, if desired.
Garnish with scallions. Serve warm.
Yuzu juice substitute = 1:1 ratio of lemon and lime juice with a touch of orange or grapefruit juice.Daikon substitute: Use turnips if you can’t find daikon radish. Follow the same cooking steps - peel the skin with a vegetable peeler and dice it to cubes. Turnips have a stronger peppery taste than daikon but it’s a good alternative and will give you a similar taste.This dish tastes great even the day after. It also freezes well.Where to buy daikon - You can find daikon in Asian grocery stores. I’ve seen them in Whole Foods market or even local well-stocked grocery stores. Farmers market is a good place to find it, too. How to select daikon - Select one that has a firm, smooth, and beautiful shiny skin. The leaves are light green and fresh looking. It should feel heavy, plump in hands. The most common way to serve this dish is with steamed rice. You can also serve it with any low carb fried rice or with boiled rice noodles.