Small cold jellies with tiny sea worms set inside; 土笋 names the worm, not a bamboo shoot. A southern Fujian dish, eaten with vinegar, garlic, mustard and chili sauce.
Tusundong is not actually bamboo shoot; it's made from sea worms.
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A signature cold dish of Quanzhou and Xiamen in southern Fujian. Sipunculid (peanut) worms are boiled until their collagen sets into a translucent jelly, served with vinegar, garlic, and chili.