Xian Doujiang
鹹豆漿·(xián dòujiāng)
台式早餐 (Táishì Zǎocān) - Taiwanese Breakfasts, Fast in the Suburbs
One tablespoon of Chinkiang black vinegar, soy sauce, and dried shrimp wait at the bottom of a ceramic soup bowl. In Taipei's breakfast shops, a line cook flicks these aromatics into a porcelain bowl, then hits it with a ladle of scalding soy milk to make Xian Doujiang. Right before your eyes, the acid reacts with the hot protein, blooming into silken clouds of fresh tofu. Using a carton of unsweetened soy milk, it is a ten-minute weeknight dinner you can pull off in a suburban kitchen with zero special equipment. Topped with salty cai po, chili oil, and torn pieces of day-old youtiao that soak up the broth, eat it immediately before the fried dough loses its crunch.
Ingredients
- unsweetened pure soy milk1 1/2 cup
- Taiwanese black vinegar or white rice vinegar1 tbsp
- light soy sauce1 tsp
- fine sea salt1/8 tsp
- ground white pepper1/8 tsp
- preserved radish or pickled mustard greens1 tbsp
- dried baby shrimp1 tbsp
- frozen Chinese fried cruller1/2 large
- scallion1 med
- pork floss1 tbsp
- toasted sesame oil1/2 tsp
- chili oil1 tsp
Method
- 01
Bake the frozen cruller at 350°F for 8 to 10 minutes until piping hot and crisp, then snip into 1-inch chunks with kitchen shears.
- 02
Toast the minced radish and dried baby shrimp in a dry skillet over medium heat for 2 to 3 minutes until fragrant.
Do not add oil. Waking up these dormant aromatics in a dry pan is the grandma secret that separates a real Taipei bowl from a flat imitation.
- 03
Add the vinegar, soy sauce, salt, white pepper, and half of the toasted shrimp mixture to the bottom of a deep soup bowl.
Sequence is everything here: putting the acid at the bottom of the bowl ensures the milk curdles evenly from the bottom up when poured.
- 04
Heat the soy milk in a small saucepan over medium heat until steaming and tiny bubbles form around the edges, around 195°F.
Watch it closely and pull it off the heat just before a rolling boil, which would break the proteins and cause the pot to boil over.
- 05
Pour the hot soy milk directly from the saucepan into the seasoned bowl in one steady motion.
Hold the pan a few inches above the bowl; the turbulence of the pour mixes the acid and milk without needing a spoon.
- 06
Leave the bowl completely undisturbed for 60 seconds.
Put the spoon down and walk away. Stirring now will shatter the forming curds into a murky liquid instead of soft, custard-like clouds.
- 07
Scatter the remaining toasted shrimp mixture, crisped cruller chunks, scallions, and pork floss over the curds, then finish with sesame oil and chili oil.
Serve immediately while piping hot.
Notes
Read the soy milk label before buying.
The ingredient list must say only soybeans and water. Mainstream Western brands load their cartons with gums, carrageenan, and stabilizers that completely block the curdling chemistry. Grab fresh soy milk from the Asian market, or organic shelf-stable brands like Westbrae Natural or Eden Foods.
Order it Jia Dan (with an egg) on the weekend.
For breakfast-shop luxury, crack a raw egg directly into the bowl with the vinegar and soy sauce and beat it vigorously with a fork before pouring in the scalding soy milk. The heat cooks the egg into impossibly silky ribbons suspended among the curds.
Know your dried shrimp.
Look for xia pi—tiny, papery, translucent baby shrimp found in the refrigerated or dried goods aisle of any Asian grocer—not the larger, hard, meaty dried shrimp (xia mi) that require soaking.