A batter mixing apparatus and process is disclosed for mixing a dry batter mix with a predetermined amount of water is adapted to continuously measure the temperature and the viscosity, in centipoises, with an inline viscometer. The controls of the apparatus are fully automated using a programmable logic controller in conjunction with a touchscreen display that provides real-time data, process control parameters, and a choice of batter recipes. Once the batter has reached a desired viscosity, a variable speed feed pump is used to pump the batter to a batter applicator where a food product is coated. Excess batter from the applicator is collected and returned to the mixing apparatus via a pump. The viscosity and temperature of the returned batter is measured and adjusted automatically with dry batter mix or water in order to satisfy the set parameters.