sea salt or kosher salt

Sea salt is an unrefined salt produced through the evaporation of seawater, capturing the mineral composition of the ocean. It contains trace minerals such as magnesium, potassium, and calcium, along with naturally occurring iodine in variable quantities. Kosher salt, despite its name, is not specifically designated for kosher preparation; rather, it is a larger-grained salt traditionally used in koshering meat by drawing out blood. Both differ from refined table salt in their crystal structure and mineral content, with kosher salt featuring larger, flatter crystals that dissolve more slowly and adhere better to food surfaces.

Sea salt varieties range from coarse to fine grades and can include specialty types such as fleur de sel (hand-harvested surface crystals) or smoked salts infused with wood smoke. Kosher salt's crystal size and shape—typically cubic and roughly ⅛ inch across—make it easily pinch-able and give it a lower density than table salt, resulting in different weight-to-volume ratios in recipes.

Sea salt and kosher salt serve as primary seasonings and finishing agents across global cuisines. Kosher salt is favored in professional kitchens and home cooking for its ease of control when hand-pinching—the larger crystals dissolve gradually, allowing for precise seasoning adjustments. Sea salt, particularly premium varieties like fleur de sel, is used as a finishing salt to add mineral notes and textural contrast to soups, salads, and grilled foods. Both are essential for brining, curing meats and vegetables, and seasoning stocks. In baking, their coarser structure can affect hydration and gluten development compared to table salt. Kosher salt's milder flavor profile and non-iodized nature make it preferred for most culinary applications, while sea salt's mineral complexity suits dishes where those subtle notes are desired.