Prepare the Aromatics and Mushrooms: Begin by heating a large stockpot or Dutch oven over medium heat. Add a tablespoon of neutral oil. Once shimmering, add the finely grated ginger and minced garlic. Sauté for about 1-2 minutes until you smell their fragrant aroma wafting up from the pot, being careful not to let them brown. Next, add the rehydrated and sliced shiitake and wood ear mushrooms, stirring them in for another 2-3 minutes until they begin to soften and release their earthy scent.

Build the Broth: Pour in the 1.5 litres of chicken stock. Bring the mixture to a gentle boil, then reduce the heat to a simmer. You'll notice the broth taking on a light, golden hue from the stock and aromatics. Simmer gently for 5 minutes to allow the flavours to meld beautifully.

Add Chicken and Vegetables: Carefully add the thinly shredded chicken breast and the shredded bamboo shoots to the simmering broth. Stir well. Continue to simmer for 5-7 minutes, or until the chicken pieces turn opaque and are cooked through, and the bamboo shoots are tender-crisp. The broth should maintain a steady, gentle bubble.

Introduce Tofu and Season: Gently add the cubed silken tofu to the soup, stirring very carefully to avoid breaking the delicate cubes. Stir in 3 tablespoons of light soy sauce and 3 tablespoons of Chinese black vinegar, along with 1 teaspoon of white pepper. Taste the broth at this point – it should have a balanced sweet-sour-salty profile. Adjust with more soy sauce or black vinegar if needed, aiming for a prominent, yet harmonious, sour tang.

Thicken the Soup: Give your cornflour slurry a quick stir to recombine. Slowly pour the slurry into the simmering soup in a thin, steady stream, stirring continuously. As you stir, watch the soup’s texture transform; it will visibly thicken, becoming glossy and slightly viscous within 1-2 minutes. Continue to cook for another minute to ensure the cornflour is fully cooked and there's no starchy taste.

Finish with Eggs and Chilli: Once the soup has thickened, slowly drizzle the lightly beaten eggs into the swirling soup while continuously stirring in a circular motion. This creates beautiful, delicate egg ribbons that float through the broth. You'll see the egg transform from liquid to pale yellow strands almost instantly. Finally, stir in 1 teaspoon of sesame oil and 1 tablespoon of chilli oil (or more, to your preference, for that fiery kick). The soup should now have a vibrant, slightly reddish hue and a rich, complex aroma. Serve immediately, garnished with the thinly sliced spring onions.