A salt crust is a hard, protective shell made of salt, flour, water, and sometimes egg whites, used to bake meats, poultry, or fish. It insulates the food, creating a moist, evenly cooked result and infusing it with subtle flavor.
A salt crust works by creating a sealed environment around the food being cooked. The thick layer of salt acts as an insulator, preventing moisture from escaping and distributing heat evenly. This results in incredibly tender and juicy meat. Here's a breakdown of the process:
Preparation: The meat, poultry, or fish is typically seasoned lightly with herbs and spices. Some recipes call for wrapping the food in cheesecloth to further protect it.
Crust Creation: A dough is made using coarse salt (kosher or sea salt are best), flour, water, and sometimes egg whites. The egg whites help to bind the crust together and create a stronger shell.
Encasing: A layer of the salt dough is spread on a baking sheet. The seasoned meat is placed on top, and then the remaining salt dough is used to completely encase the food, creating a sealed crust.
Baking: The salt-encrusted food is baked in a preheated oven. The baking time will vary depending on the size and type of meat.
Cracking and Serving: Once cooked, the salt crust is cracked open with a mallet or the back of a spoon. The meat is then carefully removed and served. The meat will not be overly salty, as the crust prevents the salt from penetrating too deeply.
Don't be tempted to use table salt for the crust. Table salt contains iodine and anti-caking agents that can impart a bitter taste and affect the texture of the crust. Always use kosher salt or sea salt for the best results.