To begin making these delicious buttermilk biscuits, it's important to preheat your grill to the optimal temperature of 450 F and to set up for indirect cooking. This will ensure that your biscuits cook evenly and to perfection.
In a large bowl, combine all the dry ingredients necessary for the recipe. This includes flour, baking powder, salt, and baking soda.
One important step in making these biscuits is to place your butter in the freezer for at least 10 minutes. This will allow it to harden slightly, making it easier to grate into your dry ingredients. It will also keep the butter cold while you are working your dough, this will keep it from being over worked.
Once your butter is frozen, grate one stick at a time and gently mix it into your flour mixture to prevent clumping.
After you have mixed in your butter, it's time to slowly add in your buttermilk. Depending on your preference, you can mix this in with your hands or use a dough whisk.
After you have mixed your dough, be sure to lightly flour the surface that you will use to roll it out. This will help prevent sticking and make it easier to handle.
For added flavor and texture, use a spray bottle filled with buttermilk to mist your dough as you roll it out. This will help it stay moist and tender.
Roll out the dough into a rectangle shape and fold the left and right sides over the center. Be sure to dust with flour between each fold to prevent sticking. Then spray with buttermilk to help it stick together and stay tender.
To continue building the layers of your biscuit dough, repeat the folding process two more times before rolling it out one final time.
At this point, you can choose to cut your biscuits into squares or use a traditional round cutter to create circular biscuits. Roll the dough out to a 1-inch thickness to get the desired shape.
Arrange your biscuits in a greased cast iron skillet so that they are touching. This will help them rise straight and prevent them from falling over during baking.
Finally, beat an egg with water and baste the tops of your biscuits before lightly sprinkling with coarse salt for added flavor.
Bake your biscuits in the preheated grill for 15 minutes, or until they are a beautiful golden-brown color.
Once your biscuits are finished baking, it's time to sit back, relax, and enjoy the delicious taste of your homemade buttermilk biscuits!