Salt is the single most important seasoning ingredient in cooking. It does not just make food taste saltier — it suppresses bitterness, enhances sweetness, deepens savoury flavours, and fundamentally changes the way we experience what we eat. Yet despite its central role, most home cooks use only one type of salt for everything: the small cylindrical container of table salt that has sat in the cupboard for years. Understanding the differences between the main types of salt available can genuinely transform your cooking in practical, tangible ways.
At the most basic level, all salt is sodium chloride. What varies between types is the grain size and shape, the presence of trace minerals, how and where it was produced, and — critically for cooking — how it tastes and how it behaves when you use it.
Table Salt: The Standard and Its Limitations
Table salt is heavily processed, finely ground, and typically contains anti-caking agents to prevent clumping, and often iodine added as a public health measure. The fine grain dissolves quickly and distributes evenly. However, that fine grain and high density mean it is easy to over-salt food accidentally — a teaspoon of table salt contains significantly more sodium than a teaspoon of the same volume of coarser kosher or sea salt. Table salt is perfectly fine for boiling water and for baking recipes that have been specifically calibrated for it. Its iodised variety is also a useful nutritional source of iodine for people who do not eat much seafood. Its main limitation is a slightly harsh, metallic flavour that many cooks find less pleasant than alternatives, and its density makes it easy to over-season food.
Kosher Salt: The Professional Kitchen Workhorse
Kosher salt is the salt of choice in most professional kitchens, and with good reason. Its coarse, flat, irregular flakes are easy to pinch between your fingers, which gives you physical control over how much you are adding. It dissolves quickly enough for cooking, clings well to the surface of meat, and has a clean, straightforward salty flavour without the metallic aftertaste that table salt can have. It typically contains no additives. Two major brands dominate — Diamond Crystal and Morton — and they differ significantly in density: a teaspoon of Morton Kosher Salt contains roughly twice the sodium of a teaspoon of Diamond Crystal. Always check which brand a recipe was developed with if precise seasoning matters.
Kosher salt is ideal as your everyday cooking salt: for seasoning meat before cooking, salting pasta water, seasoning dishes at the stove, and brining. It is not ideal for baking where salt is dissolved into a batter, as the large crystals may not fully dissolve in cold liquids; for baking, finely ground salt is often more reliable.
Sea Salt: Flavour and Terroir
Sea salt is produced by evaporating seawater, either through natural solar evaporation or industrial methods. The result retains trace amounts of minerals from the ocean — magnesium, calcium, and potassium — that give different sea salts subtly different flavour profiles. Fine sea salt can often be used interchangeably with table salt in cooking, and it tends to have a cleaner, more rounded flavour. Coarse sea salt is excellent for cooking pasta, seasoning meat, and as a finishing salt for its pleasant texture.
The variety of sea salts available is remarkable, ranging from inexpensive coarse sea salt from the supermarket to artisan varieties that carry distinct regional character. For everyday cooking, a good quality medium-grain sea salt is a versatile and flavourful choice.
Fleur de Sel and Other Finishing Salts
Fleur de sel — literally “flower of salt” — is harvested by hand from the surface of salt ponds along the French Atlantic coast, particularly in Guérande. The delicate crystals form naturally under specific weather conditions and are skimmed off the brine surface before they sink. Fleur de sel has a slightly moist texture, a delicate marine flavour, and a satisfying crunch. It dissolves slowly on the tongue, releasing its flavour gradually. This is a finishing salt — a condiment to be added at the table or sprinkled over a dish just before serving, not dissolved into a sauce or used for seasoning during cooking.
Other notable finishing salts include Maldon sea salt flakes (from England) which have a distinctive pyramid-shaped crystal structure and a clean, bright flavour; grey salt (sel gris) from Brittany with its earthier mineral character; and smoked salts, which have been cold-smoked over wood and add a subtle smokiness to grilled meats, eggs, and roasted vegetables.
Himalayan Pink Salt: Separating Fact from Marketing
Himalayan pink salt has been heavily marketed as a health food product. Its pink colour comes from trace amounts of iron oxide — essentially rust — along with tiny quantities of other minerals. The health claims that have been made for it — that it contains 84 essential minerals, that it is vastly healthier than other salts — are largely unsupported by evidence. The quantities of these minerals are nutritionally insignificant. As a cooking salt, Himalayan pink salt is perfectly fine; it has a pleasant mild flavour and comes in both fine and coarse grinds. As a finishing salt, its pink colour can be visually attractive. However, its reputation as a superfood far exceeds what the science supports, and at its price point, it offers no meaningful nutritional advantage over standard sea salt or kosher salt.
Iodised vs Non-Iodised: Does It Matter?
Iodine was added to table salt in many countries beginning in the early twentieth century to combat iodine deficiency and thyroid disease. For people who eat a varied diet that includes seafood, dairy, and eggs, iodine intake is generally adequate from food alone. For those on restricted diets, iodised table salt remains a reliable and inexpensive source of this essential nutrient. Artisan salts such as fleur de sel, Maldon, and most kosher salts do not contain added iodine.
A Practical Guide: Which Salt for Which Task
Use a good kosher salt or coarse sea salt as your everyday cooking salt — it gives you control and has excellent flavour. Use fine sea salt or table salt in baking recipes where precise measurement matters and salt needs to dissolve completely. Save fleur de sel, Maldon, or other artisan finishing salts for the final touch: a pinch over a perfectly cooked steak, over sliced avocado, or on a piece of good chocolate. Smoked salt works beautifully on fried or roasted eggs, grilled fish, and roasted tomatoes. Keep a separate container of fine salt for baking and a pinch-accessible box of kosher salt at the stove, and you have a versatile, practical salt setup for all everyday cooking needs.
Understanding salt is one of the most direct routes to better cooking. It costs nothing to experiment with a different salt at the table or to try a pinch of finishing salt on your next steak. The difference is often immediately apparent — and once you have experienced the satisfying crunch of a good flaky salt on fresh food, it is very hard to go back.
