To tell if fermentation is done without a hydrometer, watch the airlock for bubbling to stop completely (usually 1-2 weeks), which indicates primary fermentation is over, but rely on time (14+ days) for yeast to clean up byproducts, then taste it (should be less sweet, no harsh yeast flavors), and confirm by taking two stable gravity readings days apart (if you get another tool) or by ensuring it's fully clear/settled, as bubbling alone isn't definitive.
So how do you know when fermentation is complete? The best way to know is by checking the gravity with a tool called hydrometer. Gravity measures the density of a liquid compared to water and is used to estimate how much sugar is dissolved in your wart or beer. This helps predict the potential alcohol content.
How Do I Know When My Ferment is Done... Fermenting?
A lot of beginning winemakers will use the airlock to make a determination. They see that the airlock is not longer bubbling and figure this is when the fermentation is done. In reality, the fact that the bubbling stopped is only an indication that the fermentation may be done, but is is not an absolute indicator.
Signs of a Fermentation Problem
No Krausen Formation: If no foam forms on top, yeast may not have started working. Gravity Readings Remain Unchanged: Use a hydrometer to confirm fermentation progress. Unusual Smells: Rotten egg or sulfur-like smells could mean yeast stress.
When Is My Wine Ready To Bottle?
If there are still bubbles in the airlock after 14 days let it sit for another few days, or at least until there is no bubbling for at least a minute or two. Once there is no activity in the airlock, fermentation is complete.
Unlike the typical four to seven days the primary fermentation takes, the secondary fermentation will usually last anywhere from one to two weeks depending on the amount of nutrient and sugars still available. So as you can start to see, the secondary fermentation is much slower with less activity at any given time.
Two fingers means a single pour. Three fingers means a double pour. Served neat in a rocks glass. It's old school.
Calculating ABV involves using the original and final gravity readings in a specific formula. The mathematical equation used to calculate alcohol content based on original gravity and final gravity. A common formula is: (OG - FG) x 131.25. Our ABV calculator simplifies this process for you.
The 1-2-3 rule
Some people who want to reduce but not eliminate alcohol follow what's called the “1-2-3” rule for drinks: No more than one drink per hour. No more than two drinks per occasion. No more than three drinks per day.
If you have the white wine in the fridge all day, take it out 20 minutes before the guests arrive so it's ready to drink when it's time to hit the cheese board. Then you can throw the red wine into the fridge for 20 minutes so it will be ready by the next course.
Give it a full 48-72 hours if no fermentation still you should put in some dry yeast. Continue to shake the carboy to introduce o2. Yeast need good healthy aeration at the beginning to have a healthy fermentation. Once fermentation starts 70 degrees will be too warm for most strains so move to cooler room.
If you leave your bulk fermentation at room temperature overnight it will likely overproof. You can put your dough in the refrigerator to slow things down until morning.
Fermentation is usually divided into three stages: primary, secondary, and conditioning (or lagering). Fermentation is when yeast produce all the alcohol and aroma and flavor compounds found in beer.
Fermenting and rising are pretty much the same thing and refer to yeast eating through the flour and excreting the carbon dioxide which makes the dough if h expand. Colloquially, bulk ferment is the first stage of the ferment and proofing is the last stage where it rises into the shape it's going to be baked in.
Make sure you maintain your regular feeding schedule and store your starter at a comfortable room temperature, as yeast dies at 60°C.
Most wines take 5–21 days to ferment sugar into alcohol. A cap of skins forms atop the must. This cap needs to be blended back into the juice at least once per day but often more during the fermentation process to keep it moist.
One of the easiest ways to improve red wine is to give it a light chill—about 20–30 minutes in the fridge for most reds. Serving red wine slightly cooler than traditional “room temperature” enhances fruit flavors, balances alcohol, and creates a smoother, more enjoyable experience.