At the risk of getting flamed here. IF a person plans ahead there are several options for topping off.
1) Avoid it by downsizing to a smaller carboy or multiple carboys. Not always practical or possible
2) Allow for volume loss by increasing the batch size and put the 'extra' wine in smaller airlocked suitable containers (Smaller glass bottles, even clean wine bottles)
3) * Allow for volume loss by increasing the fruit concentration and SG so that a little water used for top off doesn't water down the wine. Even pH is not automatically an issue with some wines. As long at it remains 'in the range' for the wine variety you are making. (Not possible with wine kits of course.)
4) Use a similar wine or complementary wine for topping off.
* I am basing on my limited experience of course (Only 3 years) and on making only fruit wines not grape wines. What's interesting is that my original 'handbook' (came with my country fruit wine making kit) stated that their recipes allowed for using water to top off. There was a planned volume loss taken into account The KEY of course is that repeated or large quantities of water will most certainly change the characteristics of a wine.
For a 5 gallon batch 12 oz of water is less than 2% of the total volume. I would suggest that if any prior planning is done that 2% is not going to terribly change the pH or water down a robust wine.
I make a lot of berry wines, especially blueberry and with those pH change is rarely an issue and in fact overly low pH is something I have to watch for each time. After fermentation completion I've had a pH as low as 2.86 when using large quantities of blueberries and wild blackberries.
I'm not knee deep in experience but getting there slowly.
Okay - I have the same problem. I just racked off from my primary fermentation for a very small batch of strawberry - Got two solid gallons in 1 gallon carboys which is what I planned - and about 1.5 quarts leftover in a 3/4 gallon carboy - way too much space to add marbles. I would love to keep the 1.5 quarts and do something with it. Questions:
1. What would happen if I added that much finished wine to the active yeast cells?
2. What would happen if I topped off with a fruit juice?
Do either of these options work?
Fun experimenting!
Okay - I have the same problem. I just racked off from my primary fermentation for a very small batch of strawberry - Got two solid gallons in 1 gallon carboys which is what I planned - and about 1.5 quarts leftover in a 3/4 gallon carboy - way too much space to add marbles. I would love to keep the 1.5 quarts and do something with it.
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