Pre-heat oven to 375 degrees
Combine your milk and lemon juice and set aside.
In a large bowl, mix flour, baking powder, baking soda, and salt.
Next Grate the frozen butter into the dry ingredients and then stir gently to combine.
Add the grated cheese and chives and stir to combine.
Add the beaten egg to the milk and then pour into the dry ingredients. Stir gently just until mixture comes together. The dough will feel a bit wet and sticky.
Turn out onto a generously floured counter top, or a large piece of parchment paper. Flour the top of the dough then press with your hands until dough is about 1/2 inch thick. Next fold the dough in half and press again to 1/2 inch thick. Repeat one more time.
With a biscuit or cookie cutter, cut dough into rounds pressing straight down. Place on parchment lined baking sheet leaving about 1/4 inch space between biscuits.
Place into oven and bake for 20-25 minutes until biscuits are golden.
Serve and enjoy!