From the bucket of muscadine grapes that I picked from my niece’s grape arbor recently, I am making a batch of wine. I am starting with 11lbs, 5oz of grapes. You could use more or less, from what I have read; recipes vary greatly. I wouldn’t use less than 10lbs. I have chosen a yeast that I hope will leave me with a “half sweet” wine. Not bone dry, but not too sweet. So, pulling together what I have learned from two previous batches of wine and the reseach I did for those, this is the recipe I’ve put together…..
11 pounds, 5 oz Muscadine Grapes
3-4 gallons water (top up later, as needed)
sugar (up to 9lbs, dissolved in water for hydrometer or refractometer reading 1.090)
Cote des Blancs yeast
5 Campden tablets, crushed (1 per gallon)
5 teaspoons yeast nutrient
Acid blend to increase acid or
calcium carbonate (or potassium bicarbonate) to reduce acid (if needed)
(Acidity should be more than 0.55% and no more than 0.70%, there is a test kit available at wine/brew shops)
1-1/4 teaspoons Pectic enzyme
Make sure all utensils and containers are sanitized. I use a product called Starsan. Crush the grapes and add to a mesh straining bag (available at brew shops).
Pour the juice into a fermentation container (bottling bucket works well) and add the bag of grape skins/pulp.
Test the specific gravity of the juice. Use a calculation tool to figure out how much sugar to add for a 5 gallon batch. Dissolve the sugar in some hot water. Add to the juice/grapes and top off to 5 gallons. Verify the SG is in the correct range, around 1.090…it may require preparation of additional sugar/water solution. Add the crushed Campden tablets and yeast nutrient. Stir well and allow to sit for 10-12 hours, sealed and fitted with an airlock.
Test the acid and SG again. Adjust acid as needed. Add pectic enzyme. Rehydrate yeast as package directs. Pitch yeast and reseal.
Open the container and push the bag of grape must down and stir well with the juice…do this twice a day for the next 5 to 7 days. Check for the SG to drop to around 1.030 and then remove the strainer bag. Squeeze to get any additional juice and then discard (or compost!). Rack to a carboy, leaving the sediment (lees) behind and continue fermentation until complete. Rack again a couple more times at 2 months intervals, until clear. Add 1 crushed Campden tablet each time the wine is racked. Stabilize and wait for any suspended yeast to fall. Bottle and age at least 1 year and up to 3 years.
Process this time: I crushed the grapes in a sanitized bucket, using a sanitized aluminum baseball bat.
I used a refractometer to check the juice SG and it came in at 1.058. I tried figuring out the sugar amount to add using Brewer’s Friend online tool. I found out that this process is called “chapitalization”. Unfortunately, I did it wrong. I mixed the sugar with the water and added it to the grape must. Once I added the water up to 5 gallons, the the SG was only 1.045.
So, I went back to the calculator tool and entered the new figures and recalculated the additional sugar needed. Altogether, the amount of sugar added was exactly 8lbs and the new SG reading is 1.091. Being off .001 is acceptable. I also added the 5 crushed Campden tablets and 5 teaspoons of yeast nutrient. Now it sits until tomorrow morning.
9/12/16: Okay., I added the pectic enzyme. Now we get to the part that I’m less confident about, but I’m going to do the best I can: measuring the acid. I have a kit that contains two chemicals. You measure and add one to a test tube (if it came with one, I’ve lost it, so I improvised), add some water. Then you measure some of the other and start adding it drop by drop to the test tube. When the color changes, without being able to swirl it clear again, you stop. You figure out how much you used and plug that into a formula and get a number that represents the acid content. Then you compare that to a range you should be in. That will determine if you need to raise the acid content or reduce it. From what I have read, muscadines are high acid, so I anticipated that I may have to reduce them…and I had not bought the right stuff to do that. Turns out, the acid is quite low. The 2oz of Acid Blend that I bought will not be enough. The figure I came up with was 1.2 ppt sulfuric (or 0.1875 % tartaric). Pretty much Greek to me, but I found the way to figure out the amount of acid blend needed was easier using the ppt sulfuric method. At 1.2 , I needed to add 1 oz to 5 gallons for each 1.1 increase. I had 2oz on hand, so that got me up to 3.4 ppt sulfuric. The range I need to be in for this wine is 3.9 to 4.2…a half ounce more would put be at the minimum, and an ounce would put me at 4.5, a little over. I need just under 3/4oz (4.225). 0.70oz will be 4.17. So, I need to find some acid blend today…my closest store isn’t open on Mondays, so I may have to drive a bit. I know this may sound like a bunch of confusing junk, but I’m trying to get a decent end product, so I’m going to deal with it. My biggest fear is that the wine will not have enough flavor…maybe I should have used more grapes? Crossing fingers. I will be pitching the yeast late tonight.
9/12/16: 9:00 p.m. Double checking test numbers after adjustments. ppT Sulfuric looks like 4.0 and % Tartaric looks like 0.625…these numbers are right where I would want them. The pH test is a little harder to judge. I was hoping it would be more than 3.0. The color on the test strip is defininately darker than 2.8 and lighter than 3.2, but there is no color reference in between. I guessed 3.0 before and maybe it’s a little darker…just hard to judge. I’m going to go by the acid test and assume I’m good. I did take another refractometer reading and got 1.086…ugh! So, I ran it again and got 1.091…whew! Starting the rehydration of the yeast and that will be pitched shortly.
9/12/16: 11.45 p.m. Yeast pitched. Cote des Blancs from Red Star. Decription: “Cote des Blancs is also known as Epernay II. It is recommended for Chardonnay, Riesling, mead and cider, as well as fruit wines, particularly apple. it imparts a fruity aroma in both red and white wines. A slow fermenter that works best between 50 and 80 degrees. This strain will not ferment to a dryness at the low end of the range, leaving residual sugar resulting in a sweeter wine.”
9/16/16: Removed grape must added a little water and removed hydrometer sample. 73.4 F and 1.040 on hydrometer = SG 1.041 . I’m going out of town and won’t be available to stir for a few days, so I went ahead and pulled the bag and drained.