Kosher Salt vs. Sea Salt: What's the Difference?
| Kosher Salt | Sea Salt | |
|---|---|---|
| Source | Mined or evaporated, processed into large flakes | Evaporated directly from seawater |
| Crystal shape | Large, irregular flakes | Varies, fine to coarse, often more uniform |
| Additives | Usually none | Usually none, though iodized versions exist for both |
| Density (same volume) | Less dense, less salt by weight per cup | More dense, more salt by weight per cup |
Verdict
For cooking, kosher salt's large, easy-to-pinch flakes make it the preferred everyday salt among professional cooks. Sea salt's denser crystals (and sometimes trace minerals) make it a better finishing salt where you want a bit of crunch and flavor on top of the dish.
Kosher Salt
Named for its historical use in the koshering (salting) process for meat, not because it's inherently more kosher than other salt. Its large, flat, irregular crystals are easy to pinch and distribute evenly, which is why it's the default in most professional kitchens.
Sea Salt
Evaporated directly from seawater rather than mined or further processed, sea salt ranges from fine to very coarse and can carry trace minerals that add subtle flavor and color variations depending on its source.
FAQ
Can I substitute kosher salt and sea salt 1:1?
Not reliably by volume, their crystal sizes differ enough that a tablespoon of one can weigh noticeably more or less than a tablespoon of the other. Weighing salt, or adjusting to taste, is more reliable than a straight volume swap.
Why do recipes specifically call for kosher salt?
Its large, consistent flakes make measuring and seasoning by feel (pinching) more predictable than with fine table salt, which packs much more densely into the same volume and can easily over-salt a dish.