In 1963, Viavant merged Zatarain's Pa-Poose Products Co., Inc. and another recently acquired business, Pelican State Lab, owner a brand of coated fish frying seasoning mix called Fish-Fri, which was brought under the Zatarain's label, and became a best-seller. He dropped bleach, dyes, and pickles and focused on the profit centers at a new plant with modern equipment on a five-acre campus in Gretna, Louisiana, where he turned Zatarain's into a regionally well known brand by the early 1970s. Fish-Fri became "the entreè" of litigation in 1983. Zatarain's sued Oak Grove Smokehouse for trademark infringement; Oak Grove sold a competitor "Fish Fry." Although the court determined Fish-Fri qualified for protection, Oak Grove's Fish Fry qualified as a fair use. The case opinion is also notable for its use of puns.