In Spain, they added a little brandy to kill the yeast and stop the fermentation. Now the use of campden tablets or sulfuric dioxide will kill the yeast. If it becomes too dry, which is what will happen if you do not stop the fermentation, and you add sugar to make the taste better, it will keep fermenting until you stop the yeast. The yeast will keep going until all the sugar is digested by the yeast and leaves alcohol as the by product. So, by adding alcohol to your fermentation before it is finished fermenting will raise the alcohol level high enough to effectively kill off the yeast at the desired taste level. I don't drink, but I was taught how to do this.
The yeast feed on sugar/carbohydrates and their byproducts are Co2 and alcohol. Co2 is in its gaseous state and therefore bubbles out of the solution. Ethanol alcohol stays in the solution. Ethanol alcohol and Co2 are toxic to yeast just like humanities byproducts are toxic to us. So, when beginning a fermentation process the yeast begin feeding on the sugar or carbohydrates and because there is a large supply of food, the yeast population increases. The production of Co2 increases with increasing yeast population. The population of yeast reach a maximum and then their growth begins to be halted by a lack of nutrients and the amount of toxins (alcohol) in there world. The production slows and then stops when there is no more food for the yeast to eat on and/or the amount of alcohol has reached a level at which yeast cannot continue to live in.
Yes, you can add sugar to your wine or cider in small amounts. At some point the yeast will produce enough alcohol to kill themselves, Around 13-14% ABV. At that point you're no longer feeding the yeast, your sweetening your brew. When the yeast bubbles slow and or stop, stop adding sugar.
Not physically, but heavy drinking stops emotional growth.
Fermentation will slow down and eventually stop once the yeast runs out of fermentable sugars to consume or when the alcohol content becomes too high for the yeast to survive. The specific timing can vary depending on the type of fermentation and the conditions in which it is taking place.
Yeast fermentation stops producing carbon dioxide when either all the available sugars have been consumed or when environmental conditions become unfavorable for yeast growth, such as high alcohol concentrations or low temperatures.
stop giving it water and/or food yeast will also kill itself by fermentation; in a closed system the yeast will consume all it's food resources and produce enough alcohol to kill all the yeast cells.
how to stop them from drinking alcohol
When you grow up you will stop growing.
yeast
A stuck fermentation is where fermentation has stopped before all the sugar has been consumed. Yeast are organisms, and like most organisms they have an expected lifespan and they have nutritional requirements. You generally add less yeast to a fermentation than is required to complete the task on its own. Before fermentation starts the yeast rapidly reproduces itself so you end up with a much larger yeast colony. If what you are trying to ferment does not contain enough nutrition (i.e. oxygen, nitrogen, vitamins, sterols, UFAs) you will get a small, weak yeast colony that will all be dead before the sugar is completely consumed. Another factor is temperature. Most yeast has a quoted alcohol tolerance, but this is temperature dependant. Although fermentation speeds up as temperature increases, so does yeast mortality, and alcohol tolerance decreases.
There is no way to stop growing taller. You will stop growing usually around the age of 18.