In a large bowl beat the milk and eggs. In a separate bowl mix together the flour, cheese and salt then ass this into the egg and milk mixture.
Cover and let stand at room temperature for 45 minutes.
Preheat the oven to 450F / 230C degrees.
Cook the bacon in a skillet over a medium heat until golden and crisp then drain on paper towels.
Use the leftover bacon drippings to grease a muffin tin.
Stire the bacon into the rested popover batter then fill each muffin cup to two thirds full.
Bake for 15 minutes at 450F / 230C degrees then reduce the oven temperature to 350F / 180C degrees and bake for around another 15 minutes until golden brown and risen. (do not open the oven door before this stage)
Serve immediately.