To determine which brand of olive groceries is the most authentic, you need to consider a number of factors, including the production process, choice of raw materials, taste and history. The following are some of the most recognized brands of authentic olive dishes in the market:

* Chaoshanlao: This is a brand of Guangdong Jinsheng Food Co., Ltd. whose olive dishes are made using the traditional Chaoshan pickling process and have a unique taste, making it a very famous brand in the Chaoshan region.

* Pongsheng: This is the brand of Guangdong Pongsheng Industry Co., Ltd, whose olive dishes adopt the traditional curing technology of Chaoshan, and is one of the leading brands in the olive dish industry.

Besides the above brands, there are many other brands that make authentic olive dishes, such as:

* Ajisida: This is a brand of Guangdong Delicious Fresh Seasoned Food Co., Ltd, whose olive dishes are made from selected fresh olives, which have a better taste after many procedures.

* Pearl River Bridge: This is the brand of Guangdong Pearl River Bridge Food Co., Ltd. Its olive dishes are made of high quality olives and many kinds of natural spices, which are tasty and nutritious.

* Jade Garden: This is the brand of Shenzhen Jade Garden Catering Management Co., Ltd. and its olive dishes are made of high-quality olives and many kinds of natural spices, which have a delicious taste and endless aftertaste.

In short, choosing which brand of olive dish is the most authentic needs to be decided according to personal taste and preference.