How to Make Wine from Grapes: Step-by-Step Homemade Wine Instructions

To make wine from your own grapes: harvest when Brix hits 20-24, crush and destem, add a Campden tablet per gallon (3.8 L) to knock out wild yeast, wait 24 hours, pitch wine yeast, ferment red wines on the skins for 5-10 days (punching down twice daily), press, rack to a glass carboy under airlock, let secondary fermentation finish over 3-4 weeks, rack off the lees, stabilize, age at least 6 months in the bottle. That’s the short version – keep reading for exactly how each step works.

I’ve been making wine from my cold-hardy vines in Wisconsin (USDA Zone 4) for going on fifteen years. Marquette, Frontenac, La Crescent – the hybrids we grow up here don’t behave exactly like Napa Cabernet, and most juice-from-a-kit guides skip the parts that matter for backyard growers. This walkthrough is built around a realistic 5-gallon (19 L) batch from your own fresh grapes.

Before You Start: Sanitation Is Everything

I’ll say this bluntly: more homemade wine is ruined by dirty equipment than by any other mistake. Acetic acid bacteria turn your wine to vinegar. Wild mold produces off-flavors you can’t fix. Every container, siphon tube, stirring spoon, hydrometer, and airlock that touches your wine must be sanitized – every single time you use it. (Still assembling your gear? Our roundup of the best wine-making kits covers starter bundles with a fermenter, airlock, hydrometer, and sanitizer.)

My go-to is a no-rinse sanitizer like Star San (follow label dilution – typically 1 oz / 5 gallons or 28 mL / 19 L of water). Mix a batch at the start of every session, spray or soak all equipment, let it drain, and use immediately. You don’t rinse Star San off – the foam is harmless and any residue disappears into the wine. Potassium metabisulfite (K-meta) solution is the traditional alternative: 1 tsp in 1 quart (1 L) of water, rinse all surfaces, then let drain.

Step 1: Harvest at the Right Brix

Don’t guess. Taste is one signal (see how to know when grapes are ready to harvest for the full set of ripeness cues), but a refractometer or hydrometer gives you an actual number. For a dry table wine, you want 20-24 °Brix (potential alcohol around 11-14%). Cold-climate hybrids like Frontenac and Marquette often hit this range in late August through mid-September in Zone 4-5, depending on the season. Not sure your variety will reach wine Brix where you garden? Run the Will My Grapes Ripen? tool first.

Check my guide on how to know when your grapes are ready to harvest for more detail on tasting, color, seed color, and using a refractometer. Don’t rush this step – under-ripe grapes mean thin, harsh wine that no amount of aging fixes.

For a 5-gallon (19 L) batch, plan on roughly 85-100 lb (38-45 kg) of fresh grapes. See the detailed breakdown in my post on how many pounds of grapes it takes to make a bottle of wine.

Step 2: Crush and Destem

Remove as many stems as practical before or after crushing – stems add green, astringent tannins you don’t want (unless you’re intentionally going for structure and are experienced with it). A hand-crank crusher-destemmer speeds this up enormously for batches over 20 lb (9 kg); for a small batch, you can crush grapes by hand into a sanitized food-grade bucket.

The resulting mix of crushed fruit, juice, seeds, and skins is called the must. Your next steps diverge depending on whether you’re making red or white wine.

Step 3: Sulfite Treatment

Add 1 Campden tablet (potassium metabisulfite) per gallon (3.8 L) of must – crushed and dissolved in a small amount of warm water first. This suppresses wild yeast and bacteria naturally present on grape skins. For a 5-gallon (19 L) batch, that’s 5 tablets. Cover the container loosely and let it sit for 24 hours before adding wine yeast. This is not optional if you want consistent results. Caveat: this assumes standard 0.44 g potassium metabisulfite tablets. The real target is a free SO₂ level of around 25-35 ppm (exact amount depends on your must pH – lower pH needs less). Overdosing pre-ferment can stress or stall your commercial yeast, so don’t double up if you think more is better.

Step 4A: Red Wine – Ferment on the Skins

For red grapes (Marquette, Frontenac, Frontenac Gris, Marechal Foch, Leon Millot), leave the skins in contact with the juice during primary fermentation. The skins contribute color, tannin, and complexity. This is the fundamental difference between red and white winemaking.

Sprinkle (pitch) your wine yeast over the must 24 hours after sulfiting. EC-1118 (Champagne yeast) is tolerant and reliable for beginners; RC-212 (Bourgovin) suits red varieties particularly well. Fermentation starts within 12-48 hours – you’ll see bubbling and foam.

Punch down the cap twice daily. The skins float up and form a solid cap on top of the fermenting juice. That cap can harbor bacteria and also keeps skins from extracting properly. Use a sanitized potato masher or punchdown tool to push the cap back under the surface each time. This is the single most important daily task for red winemaking.

Primary fermentation for reds typically runs 5-10 days at room temperature (65-75 °F / 18-24 °C). Check with a hydrometer – when the SG drops to around 1.000-1.010 (fully or nearly dry), it’s time to press. Pressing earlier, at SG 1.020, is possible if you want a lighter, fresher style with less tannin extraction, but the mainstream target for most red wines is closer to dry.

Step 4B: White Wine – Press First, Then Ferment

For white and blush wines (La Crescent, Itasca, Prairie Star, Edelweiss), press the grapes immediately after crushing – you ferment only the juice, not the skins. This preserves the lighter color and fresher aromatics. Cold settling (chilling the juice to around 50 °F / 10 °C overnight) helps solids drop out before fermentation, giving a cleaner result, though it’s optional for beginners.

After pressing, sulfite the juice (same rate: 1 Campden tab per gallon), let it settle 24 hours, pitch your yeast, and ferment in a carboy or bucket with an airlock at a slightly cooler temperature (55-65 °F / 13-18 °C) to preserve aromatics. No punchdown needed – just check gravity every few days.

Step 5: Press (Reds) and Rack to Secondary

When primary fermentation winds down (SG around 1.010), press the red must through a wine press or fruit press to separate the new wine from the skins and seeds. Don’t squeeze too hard – harsh “press wine” from over-pressing can be bitter and astringent. A ratchet-style basket press makes this manageable for a 5-gallon (19 L) batch.

Transfer the pressed wine into a sanitized glass carboy – this is your secondary fermenter. A 5-gallon glass carboy is ideal. Fill it nearly to the top (minimize headspace to reduce oxidation) and fit an airlock. The wine will continue to ferment slowly and throw off CO₂ through the airlock for another 2-4 weeks.

The skins contain a lot of useful tannin, color, and flavoring compounds – read more about how grape skins affect wine in my post on grape skin composition.

Step 6: Malolactic Fermentation (Optional but Recommended for Reds)

Malolactic fermentation (MLF) converts sharp malic acid into softer lactic acid, reducing tartness and adding complexity. For cold-climate hybrids – which already tend toward high acidity – MLF is often a good idea for reds. It happens naturally in the weeks after primary fermentation if the temperature stays above 65 °F (18 °C), or you can inoculate with a commercial MLF starter culture. University of Minnesota Extension has a helpful overview of MLF for hybrid winemakers if you want to dig deeper.

A word on acid for cold-climate hybrids: Frontenac, Marquette, and similar varieties often have higher total acidity (TA) than warm-climate grapes. If your must is very tart, an acid test kit can tell you whether you need to reduce acid (potassium bicarbonate is the most common tool). High-acid correction is vineyard-specific – follow your local extension service’s guidelines or a reputable winemaking guide for exact rates, as this is where a small error can throw off the final wine significantly.

Step 7: Rack, Stabilize, and Clear

About 4-6 weeks after pressing, rack (siphon) the wine off the sediment (lees) into a freshly sanitized carboy. Leave the dead yeast and solids behind – wine sitting on heavy lees too long can develop off-flavors. Top up the carboy to minimize headspace and refit the airlock.

When the wine has finished all fermentation (SG steady at 0.995-1.000 for a dry wine, airlock barely bubbling), stabilize it before bottling. Add 1 Campden tablet per gallon (crushed, dissolved in water) and stir gently. Important – potassium sorbate and MLF don’t mix: If your wine went through malolactic fermentation (Step 6) – which is the recommended path for most cold-climate reds – do not add potassium sorbate. Sorbate reacts with the lactic acid bacteria left over from MLF to produce an irreversible geranium-like off-odor that cannot be fixed. For wines that underwent MLF, stabilize with sulfite (Campden) only and ensure the wine is fully dry before bottling. Potassium sorbate is appropriate only for wines that did not go through MLF – for example, a slightly sweet white or rosé where you want to prevent re-fermentation in the bottle. Stir gently after any additions, then let the wine sit and clear. Most wines will be brilliantly clear after another 2-4 weeks of settling, aided by a small dose of bentonite or just patience.

Step 8: Bottle and Age

Rinse and sanitize your bottles (25 standard 750 mL bottles for a 5-gallon / 19 L batch). Siphon the wine off the lees one final time directly into bottles. Use a floor corker or lever corker – trying to push corks in by hand rarely ends well. Store bottles on their sides in a cool, dark place: 55-65 °F (13-18 °C) is ideal.

I know this is the hard part: wait at least 6 months before opening the first bottle. Cold-climate hybrid reds – Marquette especially – come alive after 12-18 months in the bottle. I’ve had batches that were rough and tannic at 6 months that became genuinely impressive at 18 months. Write the vintage year on each bottle and hide them in the back of the rack.

A Note on Chaptalization

If your harvest Brix is below 20 (common in cool, wet years), you may need to add sugar to bring the must up to a reasonable potential alcohol – this is called chaptalization – our Brix to potential-alcohol calculator computes how much sugar to add for your target. Dissolve plain cane sugar in a small amount of warm must before adding it to the main batch. Cornell Cooperative Extension has a practical guide on how much to add based on your starting and target Brix. Don’t over-chaptalize: the goal is to compensate for a cool season, not to make a syrupy high-alcohol wine.

Frequently Asked Questions

How long does it take to make wine from grapes?

From crush to first bottle: roughly 3-4 months minimum if you want a drinkable young wine. But most home winemakers would say 9-12 months is when you see the full potential of your batch. Cold-climate hybrid reds benefit most from patience – 12-18 months in bottle is not unusual.

Do I need special equipment?

For a 5-gallon (19 L) batch you need: a primary fermenter (food-grade plastic bucket with lid), a glass carboy for secondary, an airlock, a hydrometer, a siphon and tubing, 25 wine bottles, a corker, and a wine press (or at minimum a mesh bag for pressing by hand). Sanitation chemicals and Campden tablets round out the list. A complete starter kit covers most of these.

What yeast should I use for cold-climate hybrid grapes?

EC-1118 (Champagne) is the most forgiving choice for beginners – tolerant of temperature swings and high alcohol. For Marquette and Frontenac reds, RC-212 or Lalvin 71B are popular choices among Upper Midwest winemakers; they preserve fruit character and handle the higher acid levels well. Avoid baker’s yeast for fruit wine – it can create off-flavors and stalls at lower alcohol levels.

My wine tastes very sharp and acidic – what went wrong?

Nothing went wrong – this is normal for cold-climate hybrids, especially in cool vintages. High total acidity is a characteristic of varieties like Frontenac, La Crescent, and Marquette. Options: let the wine age (acid perception softens over time); conduct malolactic fermentation; or use potassium bicarbonate to reduce TA – follow your extension service’s instructions for exact dosing. Do not add water to dilute acidity; it dilutes everything else too.

Can I make wine from grapes the first year I plant vines?

No – in the first 2-3 years, vines need all their energy for root and trunk establishment. Harvest any fruit that forms in Year 1 or 2 and compost it. You’ll get your first real crop in Year 3 (sometimes Year 4 after a hard winter). The wait is worth it.