soft silken tofu - 300 grams (300 grams, cut into roughly 1-inch cubes, soaked in hot salted water for 1-2 minutes then drained)
lean beef shin - watch the video to see (minced, used for frying and stock)
pork bones - 500 grams (for stock, about 500 grams)
beef shin bones - 500 grams (for stock, about 500 grams)
Shaoxing wine - 1 tablespoon (for stock, about 1 tablespoon)
ginger - watch the video to see (a hunk, smashed, for stock)
scallion - watch the video to see (tied in a knot, for stock)
Sichuan peppercorns - watch the video to see (optional, for stock and final seasoning)
oil - 120 mL (about half a cup for frying minced beef)
salt - 3/8 teaspoon (3/8 teaspoon added to oil during cooking)
douchi (Chinese fermented black soybeans) - watch the video to see (minced, fried with beef)
chili powder - watch the video to see (ground from toasted dried chilis, seeds partially retained)
green garlic - watch the video to see (added at the end)
chili oil - watch the video to see (optional drizzle at the end)