# Kosher Salt

Kosher salt is a coarse-grained salt with large, flat crystals and no additives — preferred by chefs because it pinches easily, dissolves cleanly, and seasons more evenly than fine table salt.

**Kosher salt** is a coarse-grained salt with large, flat or hollow crystals and no added iodine. It is named for its traditional use in koshering meat, where the large crystals draw blood from the surface. Cooks prefer it because the flake size makes seasoning by hand more controllable than fine table salt.

The salt itself is not necessarily certified kosher: "kosher salt" is short for "koshering salt". What sets it apart is crystal structure. The large, irregular flakes are easy to pinch, spread evenly across food, and dissolve without the faint metallic edge that iodized table salt can leave. The same structure is why kosher salt weighs less per teaspoon than table salt, which matters every time a recipe measures salt by volume. For recipes that measure salt by weight instead, see [baker's percentages](https://fond.kitchen/glossary/bakers-percentage/).

**Kosher Salt at a Glance**
- Crystal | Large flakes (Diamond Crystal: hollow; Morton: flat, rolled)
- Iodine | None added
- Weight per tsp | 3 g Diamond Crystal, 4.8 g Morton (table salt: 6 g)
- Table salt ratio | 1 tsp table salt = 2 tsp Diamond Crystal = 1.5 tsp Morton
- Closest substitute | Coarse sea salt, swapped by weight

## Why do chefs prefer kosher salt?

Professional cooks reach for kosher salt for practical reasons that affect every dish:

- **Easy to pinch and control** -- the large flakes sit between your fingers, letting you feel exactly how much you're adding. This tactile feedback is why [mise en place](https://fond.kitchen/glossary/mise-en-place/) setups almost always include a small bowl of kosher salt
- **Even distribution** -- flat crystals adhere to food surfaces better than fine granules, creating more uniform seasoning when [searing](https://fond.kitchen/glossary/searing/) meat or [roasting](https://fond.kitchen/glossary/roasting/) vegetables
- **No iodine** -- kosher salt is not iodized, so it never carries the faint metallic note iodized salt can add to delicate dishes. Diamond Crystal has no additives at all; Morton adds a small amount of anti-caking agent
- **Forgiving** -- the larger crystal size makes it harder to accidentally over-salt. A pinch of kosher salt contains less sodium than the same pinch of table salt
- **Dissolves cleanly** -- no chalky residue or off-flavors from additives

## Kosher salt vs table salt vs sea salt

- Crystal size | Large, flat flakes | Small, uniform cubes
- Weight per tsp | 3-5g (brand-dependent) | 6g (consistent)
- Additives | No iodine (Morton: anti-caking agent) | Iodine + anti-caking agents
- Taste | Clean, pure salt flavor | Can taste metallic from iodine
- Best for | Cooking, seasoning by hand | Baking (precise volume), pasta water
- Texture | Coarse, pinchable | Fine, pourable

Sea salt falls between the two. Coarse sea salt works like kosher salt for cooking, while fine sea salt behaves more like table salt. [Finishing salts](https://fond.kitchen/blog/types-of-salt-cooking/) (fleur de sel, Maldon) add texture and a mineral crunch to finished dishes but cost too much for everyday cooking.

**When to use table salt instead:** Baking recipes that call for salt by volume assume table salt's consistent density. Using kosher salt in baking without adjusting quantities can lead to under-seasoned results. For precise baking, a [kitchen scale](https://fond.kitchen/glossary/kitchen-scale/) eliminates this problem entirely.

## Diamond Crystal vs Morton: the conversion that matters

This is the most important thing to understand about kosher salt: the two dominant brands are **not interchangeable** by volume. They use different manufacturing processes that produce very different crystal structures.

**Diamond Crystal** uses a patented Alberger process that creates hollow, pyramid-shaped flakes. These flakes trap air, making the salt less dense by volume. Most professional kitchens and cookbook authors default to Diamond Crystal.

**Morton** uses a rolled process that creates flat, compact flakes. These pack more tightly, making Morton roughly 1.5-1.6x saltier than Diamond Crystal by volume.

**Kosher Salt Conversion Chart**
- 1 tsp Diamond Crystal | 3g
- 1 tsp Morton | 4.8g
- 1 tsp table salt | 6g
- 1 tbsp Diamond Crystal | 9g
- 1 tbsp Morton | 14.4g
- 1/4 cup Diamond Crystal | 36g
- 1/4 cup Morton | 57g

### How to convert between brands

- **Recipe says Diamond Crystal, you have Morton:** use about **2/3 the volume** (or weigh it)
- **Recipe says Morton, you have Diamond Crystal:** use about **1.5x the volume** (or weigh it)
- **Recipe doesn't specify a brand:** assume Diamond Crystal if the author is American. When in doubt, start with less and taste

The safest approach is always to measure salt by weight. A [kitchen scale](https://fond.kitchen/glossary/kitchen-scale/) removes all brand confusion.

## How do you season with kosher salt?

Good seasoning is the single biggest difference between restaurant food and home cooking. These techniques apply whether you're [searing](https://fond.kitchen/glossary/searing/) a steak or [roasting](https://fond.kitchen/glossary/roasting/) vegetables.

**Seasoning with Kosher Salt**
+ Season from 25-30cm above the food so crystals spread evenly across the surface
+ Season in layers at multiple stages (sweating, adding liquid, before serving)
+ Taste after each addition and stop when flavors feel balanced
+ Salt meat 45 min to 24 hours before searing for deeper seasoning and a better Maillard reaction
+ Weigh salt with a kitchen scale when precision matters
+ Keep a small open bowl of kosher salt next to the stove for easy pinching
- Don't substitute kosher salt for table salt by volume without adjusting (you'll under-season)
- Don't forget to compensate for soy sauce, fish sauce, Parmesan, or other salty ingredients
- Don't store kosher salt in a grinder, the crystals are already the right size
- Don't rely on a single salt addition at the end, layered seasoning builds depth

**Season before [searing](https://fond.kitchen/glossary/searing/).** Salt meat 45 minutes to 24 hours before cooking. The salt initially draws moisture out, then the brine reabsorbs, seasoning the meat throughout and improving the [Maillard reaction](https://fond.kitchen/glossary/maillard-reaction/) on the surface. A steak salted at least an hour ahead browns more evenly than one salted just before it hits the pan, because the surface has time to dry again.

## What are the best kosher salt substitutes?

If you can't find kosher salt, here's what works:

- **Coarse sea salt** -- the closest substitute. Look for additive-free varieties with a similar flake size. Measure by weight for accuracy.
- **Fine sea salt** -- usable, but its density is closer to table salt. Use 1/2 the volume for Diamond Crystal, or 3/4 the volume for Morton.
- **Table salt** -- same ratios as fine sea salt: 1/2 the volume of Diamond Crystal, 3/4 the volume of Morton, or weigh to match. The flavor may have a slight metallic edge from iodine.
- **Fleur de sel / Maldon** -- too expensive for cooking, but fine in a pinch. Their flake structure is similar to kosher salt.

**Kosher Salt Substitute Ratios (by volume)**
- 1 tsp Diamond Crystal | 1/2 tsp table salt or fine sea salt
- 1 tsp Morton | 3/4 tsp table salt or fine sea salt
- 1 tsp Diamond Crystal | 2/3 tsp Morton
- 1 tsp table salt | 2 tsp Diamond Crystal or 1.5 tsp Morton
- Any kosher salt | Coarse sea salt, equal weight

Outside the US, kosher salt is less common in stores. Coarse, additive-free sea salt is the standard substitute in most European and Latin American kitchens, and it behaves the same way in the hand.

## Kosher salt in baking

Baking is the one area where salt type genuinely matters for accuracy. Most baking recipes assume table salt unless they specify otherwise, because its fine, uniform crystals measure consistently by volume.

If a baking recipe calls for "1 tsp salt" without specifying type:
- Use 1 tsp table salt (what the recipe likely means)
- Or 1.5 tsp Morton kosher salt
- Or 2 tsp Diamond Crystal kosher salt
- Or just weigh 6g of whatever salt you have

For bread baking specifically, salt is usually calculated as a [baker's percentage](https://fond.kitchen/glossary/bakers-percentage/) of flour weight, typically 1.8-2.2%. At that level of precision, weighing salt is the only reliable method.

## Storing kosher salt

Kosher salt doesn't expire and doesn't need special storage. Keep it in a small, open bowl or a salt cellar near the stove for easy access during cooking. The open container makes pinching fast and natural.

Avoid storing kosher salt in a salt grinder. The crystals are already the right size for cooking. Grinding them defeats the purpose.

If your kosher salt clumps in humid conditions, break it apart with your fingers. Unlike table salt, it contains no anti-caking agents, so minor clumping is normal and harmless.

## Kosher salt in Fond

When a recipe in Fond specifies salt, the ingredient list distinguishes between kosher salt and table salt. Fond's [recipe scaling](https://fond.kitchen/glossary/recipe-scaling/) adjusts salt quantities by weight, so you get accurate amounts regardless of which brand of kosher salt you use.

## Frequently asked questions

**Is kosher salt healthier than table salt?**
Chemically, all salt is sodium chloride. Kosher salt has no iodine, so if you rely on iodized salt for dietary iodine, switching entirely to kosher salt means getting iodine from other sources (seafood, dairy, eggs). In terms of sodium per gram, they're identical.

**Can I use kosher salt for everything?**
For most cooking, yes. The main exception is baking, where table salt's finer grains dissolve more evenly in batters and doughs. You can use kosher salt in baking if you weigh it on a [kitchen scale](https://fond.kitchen/glossary/kitchen-scale/) rather than measuring by volume.

**Why do recipes say "kosher salt to taste"?**
Because the right amount of salt depends on your ingredients, your palate, and your brand of kosher salt. "To taste" is more accurate than a fixed measurement. It acknowledges that seasoning is a judgment call, not a formula.

**What is the difference between kosher salt and sea salt?**
Crystal structure and source. Kosher salt is mined, processed into large flakes, and contains no additives. Sea salt is evaporated from seawater and can range from fine to very coarse, sometimes with trace minerals that add color and subtle flavor. For cooking, coarse sea salt and kosher salt are interchangeable by weight.

**How much kosher salt equals 1 teaspoon of table salt?**
About 2 teaspoons of Diamond Crystal or 1.5 teaspoons of Morton. The safest method is to weigh: 1 teaspoon of table salt weighs 6g, so use 6g of whichever kosher salt you have.

**Should I buy Diamond Crystal or Morton?**
Either works. Diamond Crystal is the industry default and what most American cookbooks assume. Morton is more widely available in grocery stores. Pick one, learn its salting characteristics, and stick with it. Switching brands mid-recipe is where mistakes happen.

**Is kosher salt iodized?**
No. Kosher salt is sold without added iodine, which is the main nutritional difference from table salt. If kosher salt is the only salt in your kitchen, iodine has to come from seafood, dairy, eggs, or iodized salt used elsewhere.

**What does "kosher" mean on a salt label?**
It refers to the salt's use in koshering (salting meat to draw out blood), not to religious certification of the salt. Any pure salt is kosher in the dietary sense. Some brands also carry a certification mark, but the name predates it.


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*Published: 2026-02-05 | Last updated: 2026-09-02*

*Category: ingredients*

[View on Fond](https://fond.kitchen/glossary/kosher-salt/)