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Category Archive for 'enology'



Making A Yeast Starter

Why make a starter?
You can get good results from wine yeast by just sprinkling a newly opened packet directly onto your must. There are times, however, that you really ought to use a starter. Yeast become active and start reproducing much more quickly and reliably in a starter, so in difficult (for the yeast) situations, […]

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Don’t buy the expensive equipment
I buy wine grapes through my local homebrew shop in 100 lb lots, which is enough to make five or six gallons of wine. They take customer orders, arrange to buy the grapes from growers, and provide the use of their equipment. They will do all the work, so I can […]

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Too much acid, but I don’t dare neutralize it
I pressed the cherry wine four weeks ago, and looked in on it yesterday. It’s had time to settle, and the clear wine has a lovely dark color. It tastes tart, though, and when I measured the total acidity (TA) I could see why. It was 11 […]

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Oregano Wine Recipe: pH restored

I’ve been stirring my oregano wine every day since I used potassium bicarbonate to raise the pH. Yesterday I took some measurements, and I found some good news and some bad news. The good news is that I succeeded in raising the pH to 3.67, and that’s high enough to permit fermentation. The bad news […]

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I tested a sample of my oregano wine yesterday. The specific gravity is 1.053 and the pH is 2.62. These results are virtually unchanged from 7/13/07 when I first noticed the pH crash that stopped the yeast in their tracks. I’ll try to get them going again by neutralizing some of the acid, raising the […]

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I’ve been thinking about the pH drop that brought fermentation to a near halt, and I’ve decided to deacidify with potassium bicarbonate (KHCO3). Most of the information I could find on neutralizing acid has to do with reducing the total acidity (TA); I couldn’t find anything about deliberately raising the pH. That means I have […]

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Oregano Wine Recipe: pH crash

My oregano wine has been fermenting very slowly, and I suspected a pH problem. I was following a recipe that called for 3 tsp of acid blend. I decided to add only 1 tsp at the beginning, because I was afraid the pH could drop so low that it would inhibit the yeast. The must […]

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To work properly, a pH meter must be calibrated. You do this by preparing (or buying) buffered solutions of known pH and testing the meter against them. My meter uses a two point calibration. It works by immersing the meter in the first buffer solution (pH 6.86 in this case) then reading the pH and […]

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I Bought A pH Meter

I’ve used pH papers for a while, but in making red wine from cherries I’ve gone beyond their limits. I can’t read the color very well when I’m measuring dark colored wine, and for the same reason, its tough to do acid titration with an indicator. Since I didn’t have a good way to measure […]

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Different for a reason: Why I’ll make it white
When most people think about tomato wine, they - ok, most people don’t think about tomato wine, but if they did they would - think about red wine. It’s the same way with cherry wine, and just as I wrote about white cherry wine a few days […]

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