Salt is the most overlooked variable in home cooking. Cooks invest in better olive oil, better knives, better pans, then ruin everything by under-salting or over-salting because a recipe wrote “1 teaspoon salt” without specifying which kind. The same recipe made with table salt versus Diamond Crystal kosher salt versus Morton kosher salt produces three different sodium levels, sometimes by a factor of two. Knowing what each salt is, when to use it, and how to convert between them removes more cooking inconsistency than any other single skill.
All cooking salts are essentially sodium chloride. The differences come from crystal size, crystal shape, processing method, and trace mineral content. These differences affect how the salt dissolves, how it sticks to food, how easy it is to pinch, how much fits in a teaspoon, and how it feels on the tongue. They do not produce dramatically different flavors at finished-dish saltiness levels; what they produce is different control over seasoning.
The four salts worth keeping
For a well-stocked kitchen, four salts handle nearly every job.
A small box of iodized table salt for baking and brining.
A box of kosher salt (one brand, used consistently) for general seasoning.
A flake or finishing salt (Maldon or similar) for the final sprinkle on plated food.
Optionally, a fine sea salt for everyday use if you prefer it over kosher.
Beyond these, salt collections become a hobby rather than a tool. Smoked salts, colored salts, and exotic harvest-site salts are interesting but contribute little that kosher and Maldon do not already cover.
Table salt
Fine grains, very high density, typically iodized.
A teaspoon of table salt weighs about 6 grams. The crystals are small and uniform, made by evaporating brine in a vacuum.
Best for: baking (the precise measurement matters, and table salt’s density is consistent), brining (it dissolves quickly), boiling pasta water (you need a lot, fast), and any application where the salt needs to disappear into the liquid completely.
Avoid: hand-seasoning. Table salt’s fine grain is hard to pinch evenly, so you tend to over-salt by accident. The flow of a salt shaker is also poor for distributing salt evenly across a surface like meat or vegetables.
Kosher salt
Larger flakes, lower density, typically not iodized.
The two dominant US brands behave very differently:
Diamond Crystal: flat, flaky, hollow pyramid-shaped crystals. About 2.8 grams per teaspoon. Very easy to pinch. Dissolves quickly. The default in professional kitchens.
Morton: more compact, denser crystals. About 4.8 grams per teaspoon, roughly 70 percent more salt per teaspoon than Diamond Crystal. Easier to find in supermarkets. Slightly slower to dissolve.
This density difference is the single most common cause of over-salted recipes. A recipe written for Diamond Crystal that you make with Morton will be significantly saltier than intended.
Best for: hand-seasoning meat and vegetables (the larger crystals are easy to pinch), salting cooking water, finishing a dish that needs a controlled amount of salt, dry-brining proteins overnight.
Pick one kosher salt brand and use it consistently. Switching back and forth ruins seasoning intuition.
Sea salt
A category, not a single salt. Made by evaporating seawater rather than mining underground rock salt deposits.
Fine sea salt: small crystals similar to table salt but typically without added iodine or anti-caking agents. Sometimes has a slight mineral complexity from the original seawater.
Coarse sea salt: larger crystals, used in grinders or for finishing.
Sea salt is fine for general cooking. The texture and trace mineral story is more marketing than meaningful at dish level, but it dissolves well, holds in a grinder, and tastes clean.
Best for: people who prefer the texture, mineral-trace flavor, or non-iodized profile of sea salt, but who do not want to commit to a kosher salt routine.
Flake / finishing salt
Large, irregular pyramid-shaped crystals designed to be used at the end of cooking, after a dish is plated.
Maldon (English Atlantic sea salt) is the benchmark. Crystals are about 5 mm across, very thin, and crunch between the teeth before dissolving into a bright burst of salinity.
Fleur de sel (French Atlantic) is similar but typically smaller and slightly moist. More expensive, marginal practical difference.
Best for: finishing roasted vegetables, sliced steak, salads with strong textures, chocolate desserts, caramels, ice cream, sliced tomatoes, soft-cooked eggs, anything with a finished surface where you want bursts of salt rather than even seasoning.
Do not cook with flake salt. The texture is wasted during the cook and the cost per gram is much higher than functional salts.
Iodized vs non-iodized
Iodized salt has a small amount of potassium iodide added (about 45 micrograms iodine per gram of salt). This is a deliberate public health measure that has nearly eliminated iodine deficiency disorders in countries where it is the default.
The iodine can produce a faint metallic note in very delicate dishes (some pastry, very mild cheeses, some delicate cocktails). For everyday cooking, this is imperceptible.
For most home cooks, iodized table salt is the right choice unless you eat a lot of iodine-rich seafood, dairy, or seaweed. Non-iodized kosher or sea salt for general seasoning works fine if your diet covers iodine elsewhere.
When to salt
The timing of salt application matters as much as the type.
Salt meat 40 minutes ahead, or right before cooking. The middle window (5 to 30 minutes ahead) draws moisture to the surface without giving it time to reabsorb, which interferes with browning.
Salt vegetables when they go into the pan or oven. The salt draws out moisture, which evaporates during cooking and concentrates flavor.
Salt water for pasta and blanching aggressively. Pasta water should taste like the sea (about 1 tablespoon kosher salt per quart). Blanching water similarly. Most pasta cookers under-salt the water by 50 to 75 percent.
Salt soups, stews, and sauces in small amounts throughout the cook, tasting after each addition. Reducing concentrates salt, so a soup that tastes correctly salted at the start will be over-salted after 2 hours of reduction.
Add finishing salt right before serving, after the food has been plated and any sauces applied.
Brining salt math
Wet brines (dissolving salt in water) typically use 1/4 cup kosher salt per quart of water, plus optional sugar and aromatics. Soak 1 to 4 hours for poultry, up to 12 for large cuts.
Dry brines (salting the surface and resting uncovered in the fridge) use about 1/2 teaspoon Diamond Crystal kosher salt per pound of meat, 24 to 48 hours ahead. The dry brine produces drier surfaces (better for crispy skin) and equally well-seasoned interiors compared to a wet brine, with less mess.
For baking bread, salt at about 2 percent of the flour weight by gram (so 10 grams salt per 500 grams flour). This is one of the few places where weighing salt is more reliable than measuring by volume, since flake salt’s density makes teaspoon-based measurements inconsistent.
Salt is the cheapest upgrade in any home kitchen. A good kosher salt and a small box of flake salt, plus the habit of tasting and seasoning throughout the cook rather than only at the end, fixes more cooking problems than any equipment purchase.
Frequently asked questions
Is kosher salt better than table salt?+
Better is the wrong word. Kosher salt has larger, flakier crystals that are easier to pinch and distribute evenly by hand, which is why most professional kitchens use it for everyday seasoning. Table salt has finer, denser crystals and almost twice the salinity per teaspoon, which makes it the right choice for baking where small measured amounts matter. The kosher salt habit is about control, not flavor. Both are sodium chloride.
How do I convert between kosher and table salt?+
Roughly 1 teaspoon table salt equals 1.25 teaspoons Morton kosher salt equals 1.75 to 2 teaspoons Diamond Crystal kosher salt. The two big kosher salt brands have very different densities, which is why recipes that just say kosher salt are unreliable. Diamond Crystal is much lighter and flakier than Morton. When a recipe specifies the brand, use that brand. When it does not, taste as you go and trust your tongue more than the measurement.
What is finishing salt and when do I use it?+
Finishing salt is large-crystal salt added at the end of a dish for texture and bursts of salinity rather than even seasoning. Maldon flake salt, fleur de sel, and Himalayan pink salt slabs are common choices. The crystals dissolve slowly on the tongue, creating little salt pops that contrast with the food. Use on roasted vegetables, sliced steak, salads, chocolate desserts, and anything with a finished surface where texture matters.
Does sea salt taste different from regular salt?+
Slightly. Sea salt contains trace amounts of magnesium, calcium, and potassium from the seawater it was evaporated from, which gives some sea salts a subtle complexity. But the dominant flavor of any salt is sodium chloride, and at dish-level seasoning the difference is small enough that most people cannot reliably tell sea salt from table salt in blind tests. Use sea salt when you want the texture (flake, fleur de sel) more than the trace minerals.
Should I use iodized salt?+
For most home cooking, iodized salt is fine and the iodine content has measurable public health value (preventing iodine deficiency). The traces of iodine can produce a very slight off-flavor in delicate dishes (some bakers report this in shortbread or sugar cookies). For everyday seasoning, this is essentially imperceptible. Use iodized table salt for baking and most cooking. Use non-iodized kosher or sea salt if you specifically prefer the texture or want zero risk of off-flavor in delicate dishes.
Morgan Davis
Morgan Davis writes for The Tested Hub.