The reactants for alcoholic fermentation are glucose (a six-carbon sugar) and yeast (a microorganism). The products of alcoholic fermentation are ethanol (a two-carbon alcohol) and carbon dioxide gas.

The overall chemical equation for alcoholic fermentation is:

$$C_6H_{12}O_6 \ (glucose) + yeast \longrightarrow 2C_2H_5OH \ (ethanol) + 2CO_2 \ (carbon\ dioxide)$$