Le Sel Gris, or French Grey Sea Salt, also known under marketing terms as “Celtic” salt. Our French Grey Sea Salt has been harvested for centuries using ancient Celtic methods in the iconic Guérande region of Brittany, France, seawater evaporates naturally in clay-lined ponds under sun and wind. The salt crystals form on the clay bottom, picking up its signature soft grey color and retaining natural moisture (around 10-15%) for a moist, crunchy texture that dissolves smoothly.

As a finishing salt, a light pinch adds delightful crunch and bursts of flavor to avocado toast, popcorn, chocolate desserts, or even ripe fruit. Chefs love it for its ability to elevate simple dishes: imagine a perfectly seared scallop kissed with grey salt, or a heirloom tomato salad where the minerals amplify the natural sweetness. It’s also fantastic in baking—add it to bread dough or cookie batter for enhanced taste and texture.

French Grey Sea Salt is coarser than table salt, perfect as a finishing touch on meats, veggies, roasted dishes, or even in baking for added depth.

History of French Grey Sea Salt

The story begins in the shallow, clay-lined salt ponds (known as œillets) of the Guérande peninsula, a region with a history of salt production dating back over 2,000 years to Celtic times. Seawater from the Atlantic is channeled into a series of evaporation basins during the summer months. Wind and sun work naturally to concentrate the brine—no machinery, no additives, no chemicals.

As the water evaporates, salt crystals form on the clay bottom. Traditional paludiers (salt farmers) use long wooden rakes to gently harvest the coarser crystals that settle and absorb the mineral-rich clay, giving the salt its signature grey color and moisture content of around 10-15%. This careful, labor-intensive process yields only a fraction of what industrial methods produce, making each batch a true artisanal product. The result is a moist, crunchy salt that dissolves smoothly, never overpowering but always enhancing.

What sets French Grey Sea Salt apart is its rich mineral composition. While primarily sodium chloride (about 85-90%), it retains natural trace elements like magnesium, calcium, potassium, iron, zinc, and dozens more drawn from the sea and clay. These minerals contribute to a nuanced, slightly earthy brininess with subtle umami notes—far more flavorful than refined salts. Many appreciate it as a “healthier” seasoning option because it provides small amounts of electrolytes that support hydration, muscle function, and overall balance, though it’s still salt and should be used mindfully. Compared to heavily processed table salt (nearly 99% sodium chloride with added iodine and anti-caking agents), French Grey offers a more natural, unadulterated experience.

In the kitchen, this versatile salt shines in countless ways. Use the coarse crystals as an everyday cooking salt—sprinkle it into soups, stews, roasted vegetables, or brines for meats to build depth without overwhelming. Its moisture prevents it from drawing out too much liquid from foods, making it excellent for seasoning steaks, grilled fish, or fresh salads.

Beyond cooking, French Grey Sea Salt’s natural moisture and minerals make it popular for wellness rituals. Some add it to baths for a soothing, mineral-infused soak that may help with relaxation and skin softness. Its purity—no preservatives or processing—appeals to those seeking clean, additive-free ingredients.

At Oviedo Olive Oil, we proudly stock this iconic French Grey Sea Salt, sourced from trusted partners like The Spice & Tea Exchange of Mount Dora. It’s the perfect complement to our olive oils and vinegars—try it with a drizzle of balsamic for an unforgettable dipping experience. Whether you’re a seasoned chef or simply someone who values quality ingredients, French Grey Sea Salt brings a touch of French culinary heritage to every meal. Elevate your dishes with this mineral-rich gem today—bon appétit!