Tequila colony size every four hours. This process goes on for 24–48 hours. Next, yeast turns acetaldehyde into ethyl alcohol which is known as one of the organoleptic compounds produced in fermentation. The two main categories of yeast used in tequila are commercial brewers yeast and yeast that comes from precultivated existing yeast that has been preserved. The use of either type of yeast can result in different end products of tequila. Tequila is a distilled beverage that is made from the fermentation of the sugars found from the blue agave plant once it has been cooked, the main sugar being
Tequila, Jalisco produced here. Other attractions on the route include archeological sites, old mansions and opal and obsidian mines. The archeological sites primarily belong to a culture known as the Guachimontones located in the municipalities of Teuchitlan and Magdalena. In a number of the old hacienda/distilleries, visitors are invited to try their hand at some of the aspects of tequila making, such as cutting the spines off the agave plant. Most of these haciendas also have tasting rooms and restaurants. Along the route is the Tequila Volcano. The Tequila Express is a train for tourists which has been in operation since 1997.