- 4 cups (960 ml) unsweetened soy milk (fresh preferred; can use store-bought) - 1/2 tsp (2.5 g) gypsum (calcium sulfate) or nigari (magnesium chloride), dissolved in 2 tbsp (30 ml) warm water - 1/8 tsp (0.5 g) kosher salt - 1 cup (200 g) dark brown sugar (or rock sugar) - 1 1/4 cups (300 ml) water - 3 oz (85 g) fresh ginger, peeled and thinly sliced - 2 tbsp (30 g) roasted peanuts, crushed (optional) - 1 tbsp (15 g) dried osmanthus or candied mandarin peel, for garnish (optional)
1. If making douhua from soy milk: heat 4 cups (960 ml) soy milk in a saucepan over medium heat, stirring occasionally to prevent scalding, until it reaches about 180°F (82°C) and small steam rises (do not boil). Remove from heat and let cool 1–2 minutes. 2. Stir 1/8 tsp (0.5 g) salt into the warm soy milk. Slowly pour the dissolved coagulant (1/2 tsp (2.5 g) gypsum/nigari in 2 tbsp (30 ml) warm water) into the soy milk while stirring gently and continuously for 10–15 seconds, then stop stirring. 3. Quickly transfer the mixture into 4 heatproof serving bowls or a shallow heatproof dish. Cover each bowl with a lid or plate, or cover the dish with foil. 4. Steam the filled bowls over gently simmering water for 8–12 minutes (time varies with bowl size) until the surface sets into a very soft custard (a slight jiggle is normal). Alternatively, after adding coagulant, let the covered bowls sit undisturbed in a warm place for 15–25 minutes until set. 5. While the douhua sets, make the ginger syrup: combine 1 cup (200 g) dark brown sugar, 1 1/4 cups (300 ml) water and 3 oz (85 g) sliced ginger in a small saucepan. Bring to a gentle boil over medium heat, then reduce to a simmer and cook 8–12 minutes until the syrup is fragrant and slightly thickened. Taste and adjust sweetness; remove from heat and discard or keep the ginger slices, as preferred. 6. To serve warm, ladle 2–3 tbsp (30–45 ml) of hot ginger syrup over each bowl of douhua. If the douhua cooled while setting, gently reheat the bowls in a steamer or place each bowl in a pan of simmering water until warmed through (do not boil). 7. Garnish each serving with crushed roasted peanuts and/or a pinch of dried osmanthus or candied mandarin peel, if using. Serve immediately alongside the warm zongzi to balance savory richness. 8. Shortcut option: for a quicker version, gently warm store-bought silken tofu (soft) in simmering water 3–4 minutes, drain, then spoon into bowls and top with the hot ginger syrup per Step 6.
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