Abstract
Currently, the production of soft drinks is one of the well-developed market segments. The production is aimed at obtaining drinks with various functional properties. Most consumers prefer new, competitive drinks aimed not only at creating an invigorating effect, but also at improving the health of the body as a whole. One of the types of such drinks are isotonics - these are drinks aimed at replenishing the water-salt balance in the body after active, sports loads. The purpose of the work is to create a recipe for a drink aimed at restoring the water-salt balance of the body, using natural ingredients and sugar substitutes. The research methodology includes the use of GRETL and MS Excel programs for mathematical data processing, calculating the molar masses of salts and building regression models. The experimental part is based on the analysis of various recipes and sensory evaluation of their organoleptic properties. As a result, the optimal ratios of natural electrolytes were determined and a plant sweetener - stevia extract was selected. The developed recipe for the drink meets modern quality standards, combining useful properties and taste appeal. The work contributes to the development of domestic functional drinks, offering a practical solution for creating competitive products. The results obtained open up prospects for further research and commercial application.