VietFerm is a Vietnamese food company based in Hanoi that specializes primarily in the production of naturally fermented vinegar. It operates as VietFerm Joint Stock Company, with Trần Tâm Phương serving as its legal representative. The company’s development is connected to a family tradition of rice vinegar production that Phương continued and later transformed into a commercial business. VietFerm markets its vinegar products primarily under the Thủy Tâm brand. Production is based on natural fermentation and the use of food ingredients such as rice, fruit, and wine. Different types of rice vinegar hold a particularly important place in its range, including organic rice vinegar and red rice vinegar. The company also produces white vinegar, apple cider vinegar, and various types of wine vinegar, including varieties flavored with herbs. Its portfolio additionally includes traditional fermented products and condiments such as cơm mẻ and salted pepper. VietFerm emphasizes natural fermentation and the use of carefully selected raw materials as the main principles of its production. The company’s products are used in dressings, marinades, dipping sauces, soups, pickled vegetables, and various other Vietnamese dishes. VietFerm is headquartered on Phùng Chí Kiên Street in Hanoi and distributes its products through retail and food service channels, including restaurants in Hanoi.