The Black-lipped Pearl Oyster, also known as the “Cyclophorus” land snail, is a unique species native to the Ba Den Mountain region. Unlike typical freshwater snails, these fascinating creatures dwell in caves, their shells coiled tightly like curled coins, earning them the name “Oc Xu,” which translates to “Coin Snail.”
According to locals, these snails are elusive and challenging to find, as they only venture out of their rocky habitats during rainy days in search of food. Their diet consists of specific plants such as mountain vông leaves, ma tien, and “Nang Hai” leaves, imparting a distinct sweet and herbal flavor to their meat.
With shells resembling the dark brown hues of decaying leaves, these snails are masters of disguise, requiring sharp-eyed hunters to spot and capture them.
Once a humble delicacy among the locals, Oc Xu has now gained fame as a prized specialty. However, its popularity has led to overharvesting, making wild Oc Xu scarce and expensive. During the season, a kilogram of these snails can fetch prices ranging from 200,000 to 250,000 VND, and even then, they are mostly available only in large restaurants in Tay Ninh.
Mr. Hoang, a local resident, shared his insights: “The best time to hunt for these snails is after 6 pm when the dusk sets in or right after a rainfall. That’s when they emerge from their hiding places, making them easier to catch. Their shells blend seamlessly with the brown leaves, so one must have a keen eye to spot them.”
Recognizing the threat of overharvesting, locals in Tay Ninh have initiated efforts to cultivate and farm Oc Xu, ensuring a sustainable supply while reducing the risk of extinction. While farmed Oc Xu is more affordable, it lacks the intense sweetness and aroma of its wild counterpart.
Delightful Dishes Featuring Oc Xu:
Steamed Oc Xu with Ginger and Lemongrass
A delicate dish, Oc Xu is steamed with ginger and lemongrass, served with a side of ginger fish sauce. This simple yet delectable preparation showcases the natural sweetness of the snails and has become a signature offering in many Tay Ninh restaurants.
Grilled Oc Xu
A popular street food, grilled Oc Xu is prepared by removing the snail from its shell, marinating it in a mixture of fish sauce, garlic, chili, and ginger, and then grilling it to perfection. The result is a delicious snack with a chewy texture and a burst of flavors, best enjoyed with a side of sour and spicy ginger.
Oc Xu in Coconut Milk
A heartwarming dish, Oc Xu is stir-fried with thin slices of coconut, creating a creamy, savory, and slightly sweet concoction. The tender snail meat absorbs the rich flavors of the coconut milk, resulting in a mouthwatering sensation.
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