Thick & sweet, with red pepper, garlic & cilantro. May be produced with genetic engineering. Since 1987, House of Tsang Products have been known for their traditional Asian ingredients. Today, these authentic, flavorful sauces are a deliciously convenient way to create your favorite Asian specialties at home. www.houseoftsang.com. Questions or comments, please call 1-800-611-9782. House of Tsang Brand Since 1987, House of Tsang products have been known for their traditional Asian ingredients. Today, these authentic, flavorful sauces are a deliciously convenient way to create your favorite Asian specialties at home.