Home Wine Making, My Accidental Hobby

If you were to ask me a few years ago, I would not have thought of wine making as a hobby. I’m a pragmatist. Let the talented people do the hard work, and let me enjoy the fruit of their labor.


Then a couple of friends told me about a home wine making class organized by the Boeing Employees Wine and Beer Making Club and taught by Steve Foisie, whose list of past students include Ben Smith of Cadence Winery and Tim Narby of :Nota Bene Cellars. The class itself consisted of a day of theory followed by hands-on practice on de-stemming and crushing, primary and secondary fermentation, testing, and finally bottling. The best part is that I got to order grapes from some of the most coveted vineyards in Washington state, thanks to the buying power of the club.

My first vintage with Alisa

That was two years ago, and now I am preparing for my third vintage. So what attracts me to hobby wine making?

It Engages My Senses

I can't think of many hobbies that engage my senses in such interesting ways. I get to smell and taste the sweet juice during crush and as it gets dryer and more alcoholic through the progression of primary fermentation. I see the color deepens as pigments are deposited from the grape skins. And if I am quiet enough, I can just hear the wine yeasts happily bubbling away as they consume the sugar in the must and spit out alcohol.

Then in secondary fermentation, which is also when I start using the barrel, I taste for the conversion of harsh malic acid into softer lactic acid by the malolactic bacteria. But for the most part, I am looking for the mouth feel. Are the tannins softening in the barrel? Is the wine getting more concentrated with the slight evaporation through the porous barrel surface? For the same reason, is the color and quality of the wine stabilizing with micro-oxygenation?

Throughout the process, I am constantly engaging my sight, my smell, my taste, my touch, and arguably my hearing as the grapes are made into wine. It is all too fascinating!

It Engages My Mind

Wine making is about guiding a transformation, and many microorganisms are involved. I coax the yeasts to convert sugar into alcohol during primary fermentation and then provide a conducive environment for the malolactic bacteria to soften the acids during secondary fermentation. At the same time, I am actively protecting the wine from being exposed to acetic acid bacteria. No one wants to drink vinegary wine!

Yeast hydrated with warm water and must

Then there is oxygen, which is great in alcoholic fermentation but bad for malolactic fermentation and maturation. There is carbon dioxide, a by-product of primary fermentation, that comes in handy to protect the wine from oxidation. Finally, there is the much misunderstood sulfur dioxide, that has been wrongfully blamed for causing headache despite its antioxidant properties. I learn how to manipulate each to my advantage.

After my second vintage, I have barely scratched the surface of the biochemistry and microbiology behind wine making. What about the polymerization of phenolic compounds? What about the enzymes? With every vintage, there is an opportunity to go deeper and learn the art and science behind wine making.

It's a Party!

Last but not least, it is all about having fun! For both my vintages, I made wine with good friends. Wine making can be very physical and messy. We learned together and worked together. In the last vintage, we started each get-together with a snack or a feast and a healthy serving of wine. Then we went on with the actual wine making activity of that day. The nourishment kept us in good spirits although the wine clouded our judgement on a few occasions.

Celebrating our final product

Still all is not lost. At the end of each vintage are those beautiful bottles of wine, that we can call our own. Every bottle contains the memory of that crush that was interrupted by power outage, that batch of yeasts that was accidentally starved, or that racking that spilled half a gallon of sticky wine. Yet when we open that bottle, our heart is filled with pride. The wine tastes better than we thought it could ever taste because it is the fruit of our labor.

My Verdict: Even pragmatists need a hobby. I am glad that living in close proximity to vineyards and great resources allows me to pursue wine making as a hobby. Steve Foisie once said a good winemaker has to be a good student first. I look forward to many more lessons.

First Crush

It was a breathtaking drive from Seattle to Snoqualmie that sun-soaked September afternoon. I was exhausted and a bit cranky, having to juggle work and taking care of a sick husband and an injured dog.

However, mother nature had chosen the harvest date, and then we were given but a few days notice to get ready for the crush. I left my invalid family members in the good hands of our house guest, packed the primary fermenter, towels, and rubber boots into the Forester, and headed out to the crush facility. My excitement grew as I approached the facility - my first crush!

Crush Day

Our Syrah grapes were picked earlier that day from Chandler Reach Vineyards, technically considered to be in the Yakima Valley, but within close proximity of the Red Mountain AVA. My partner-in-wine, Alisa, and I decided to share 100 lbs of grapes between us, which would make us about two cases of wine.

At the crush facility, the winemaking class instructor, Steve, showed us how to set up the crusher and de-stemmer. All equipment were rinsed appropriately before we proceeded. Working in a group, we gently dropped bunches of grapes into the machine, which quite efficiently removed the stems and lightly crushed the grapes into the primary fermenter. But just in case, there were two of us who manually picked out stems that were missed by the machine.

There was a certain rhythm to crushing grapes that relaxed me. It was almost therapeutic! This was the first crush for most of us, and we were eager to learn and to help. As we got the hang of it, we moved faster through the bins of grapes. Our sticky grape stains were evidence of our achievement that day.

Gently dropping grapes in

Crushed and de-stemmed

More stems manually removed

Must in primary fermenter

The freshly crushed grapes, also known as must, smelled terrific. Sulfite was added to remove any wild yeast and bacteria from the must. After crushing nearly a ton of grapes (literally) and cleaning up all the equipment, it was time to take some measurements before we took the must home.

• Brix, which measures the sugar content of the must, was at 26 degrees. It was higher than the desired range of 22-25. A higher than desired Brix might lead to high alcohol content before fermentation could complete. This could result in a stuck fermentation.
• pH, which measures acidity, was at 3.53 and was within the desired range of 3.5 and 3.8.
• Titratable acidity (TA), which measures the amount of all the combined acids in the must, was at 7.125g/L and was slightly higher than the desired 4-6g/L.

The adjustment to the must needed was thankfully simple enough. To correct the Brix without adversely impacting the pH and TA, we diluted the must with water with precise measurements that Steve provided.

Alisa, my partner-in-wine, and I with our must

Primary Fermentation

A full day after the crush, we introduced re-hydrated yeast into the must and proceeded with the twice to thrice-daily punch downs. Punching down is a process to keep the juice and the crushed grapes, particularly the skins, in contact during primary fermentation. As must ferments, the crushed grapes tend to rise to the top forming what is known as the cap. Pushing the cap down into the juice allows for flavor extraction and also prevents unwanted bacterial activities.

A pack of nutrients were added to the must two days later to feed the yeast, and a second pack was added after another two days. The must was bubbling happily and got hot (around 75 to 80 deg F) with yeast activities. Unfortunately, I never got to the desired temperature range of 80 to 90 deg F. But the house smelled like a winery during primary fermentation so I took that as a good sign!

Yeast hydrated in must and warm water

Must bubbling during fermentation

In less than a week after the crush, the Brix had dropped to 6 degrees. Twice-daily punch downs continued, and four days later, the Brix measured at -1 degree. The must was then inoculated with malolactic (ML) bacteria as we prepared for the press the next day. The ML fermentation process allowed for a controlled conversion of the tart-tasting malic acids to softer lactic acids, which would hopefully enhance the body and flavor of the wine.

Press Day

To prepare for the press, all equipment needed to be sanitized. It was not the most interesting part of winemaking but very necessary to ensure that no wild strains of yeast or bacteria would enter the juice. ML bacteria was added a day before the press so that it could benefit from being evenly distributed in the juice during the pressing process.

Sanitizing 

There were three batches of must at Steve's house that day, ready to be pressed. Steve pulled out his beautiful press from the turn of the 20th century. It belonged to his grandfather and was quite the treat!

Our must had been in primary fermentation for about ten days at that time. We poured the must into the wine press and let the juice flow into a container at the bottom of the press. This is what is known as the free run. Following that, we placed heavy blocks of wood onto the crushed grapes and exerted pressure to press the remaining juice out. The unfinished wine went into the sanitized carboys and gallon jugs, that were then air-locked.

Beautiful wine press and free run

Pouring pressed wine into carboy

The day ended with a quick sampling of the three different juices. Within only ten days, you could already taste the difference among them. Some of us (not me) had clearly done a better job with punch downs and keeping the temperature at the higher and more desired range. Those juices showed a bit more tannins and structure. My juice, which was fermented cooler and with less intervention, was more fruit-forward. I can't wait to see how our wines will continue to evolve.

My Verdict: I was a skeptic when it came to winemaking. Given the abundance of great wines available, there is hardly any need to make my own wine. However, I've been having great fun so far. I've also learned a lot about what goes on in a wine. Stay tuned for my post on secondary fermentation and bulk aging.