How an inland ocean 80 miles wide and 600 feet deep
shapes every bottle of wine we pour.
Lake Michigan runs 307 miles from north to south. Every mile of that fetch is open water over which northerly winds pick up speed, moisture, and thermal energy — all delivered to the southern tip where our vines grow.
The narrowing shorelines act as a funnel. Winds converge. The thermal influence peaks here — 2–3°F warmer autumns than northern Michigan AVAs, a growing season two full weeks longer, and enough stored heat to carry Pinot Gris to full phenolic ripeness every year.
The wine in your glass didn't begin with a vintage — it began with a glacier. Here's the story of how this land became one of the most compelling wine-growing corners of the Midwest.
Around 10,000 years ago, the Laurentide Ice Sheet retreated northward across what is now Michigan. As it pulled back, it carved one of the most remarkable geological features in North America — the Great Lakes basin — and left behind something priceless for future viticulture: glacial moraine.
Moraine is the jumbled mix of clay, sand, gravel, and boulders that a glacier deposits as it melts. It drains well, it forces vine roots to search deep, and it carries the ancient mineral signature of bedrock scraped from hundreds of miles away.
Lake Michigan is not a lake in any ordinary sense. At 307 miles long, 80 miles wide, and up to 925 feet deep at its northern end — averaging 279 feet — it holds more fresh water than all five Great Lakes combined could fill the state of Texas.
That mass of water is an enormous thermal battery. It absorbs summer heat slowly, releasing it into fall when vines need it most. It moderates winter cold, reducing freeze risk for trunk and root systems. And every northerly wind carries 307 miles of that influence straight to our vines.
The lake doesn't just shape our climate — it is our climate. Every vintage is a conversation between our vines and 1,180 cubic miles of fresh water.
Our soils are a direct inheritance from the glacier — a mix of sandy loam, clay, and gravel that drains quickly after rain and warms rapidly in spring. This stress is intentional: vines that must dig deep for water and nutrients develop more concentrated, mineral-forward fruit.
The same glacial deposits that force our Pinot Gris roots downward carry traces of calcium carbonate — limestone — that buffers soil pH and adds a distinctive mineral tension to wines grown here. You taste geology in every bottle.
We grow estate Pinot Gris — the variety that has become our signature expression of this place. Cool-climate Pinot Gris is a study in tension: the grape wants warmth to ripen, but heat strips its aromatics and acidity. Lake Michigan splits the difference perfectly.
Our estate fruit shows yellow pear, lime zest, and a characteristic slate mineral quality that we believe comes directly from the glacial calcium in our soils. It finishes long, dry at the start, with just enough texture to carry a meal.
VSP — Vertical Shoot Positioning — is the trellis system we use on every vine at Free Run Cellars. It is the standard of Burgundy, the home of the world's greatest Pinot. Shoots grow upright from a bilateral cordon, held in place by moveable catch wires as the season progresses.
VSP opens the canopy vertically, allowing sunlight to reach every cluster and — critically — allowing the lake breeze to move through the vine. That airflow naturally reduces disease pressure and dries morning dew, reducing our need for intervention and letting the lake do what it does best.
Berrien Springs, Michigan · 90 minutes from Chicago · Open Friday through Sunday
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