The main fermentation phase 1: the process takes place from 72-120 hours, opening jars and stir continuously enabling activities to increase yeast biomass. Usually after about 12 hours, the yeast into the epidemic appeared first signs of fermentation, which is the first CO2 gas bubbles stick to the bottle, fermentation dramatically in the next hours. Tracking the movement of temperature, CO2 escapes, the color that the thickness of the foam in particular reducing sugar content will know the maximum fermentation time of fermentation. During this period the lower the amount of sugar in the solution fast, up slightly from 0,2-0,3g acid / ltrong every 24 hours. After 72 hours almost liquid sugar is transformed into alcohol and intermediate products completely. After 120 hours of service yeast settles
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