Can I substitute sea salt for kosher, and what amount of (fine)sea salt would I use in place of kosher?

Question

Again it's a chicken brine q. I only have (fine grind) sea and table salts in my pantry, though most meat brine recipes call for kosher salt.
Is it ok to use sea salt?

Answer 1

A dish prepared with sea salt will taste the same but will not be kosher. If you are preparing a dish for someone that requires food to be kosher, you will have to use the proper ingredients.

Answer 2

They're nearly indistinguishable. I used kosher salt in place of sea salt all the time because kosher is cheaper and I can't tell the difference. I have always used the same amount of both.