What is the equivalent of one teaspoon kosher salt in sea salt?

You can't directly substitute kosher salt for sea salt in a 1:1 ratio because they have different densities and grain sizes.

Here's why:

* Grain size: Kosher salt has larger crystals, making it less dense than table salt or sea salt.

* Density: Sea salt also varies in density depending on its source and processing.

To get the equivalent of one teaspoon of kosher salt in sea salt, you'll need to adjust the amount slightly.

Here's a general guideline:

* Start with about 3/4 teaspoon of sea salt.

* Taste and adjust as needed. Sea salt tends to have a slightly more intense flavor than kosher salt, so you may need to use even less.

Important Note: If you are baking, it's generally best to stick with the salt type specified in the recipe. The difference in saltiness can affect the final outcome of your baking.