Preheat your oven to 240C/465F. Pour a little oil into each hole of a 12 hole muffin tin.When the oven is hot, placed the oiled tin in the oven.
While your tin is heating, add eggs, milk, flour & sourdough discard into a mixing bowl and whisk vigorously until all combined. Let it sit for 5 minutes to make sure there are no lumps, then whisk again.
Add bacon, cheese & corn and mix through until well combined.
When the oil in your tin is bubbling, carefully take it out of the oven and carefully fill each muffin hole. Please be so careful when doing this as the hot oil can spit a little (an apron is a really good idea to protect your clothes). Add a little extra cheese on top and any seasonings you like (Italian herbs or bacon seasoning work really well).
Cook for 10-15 minutes at 240C/465F until they puff up and are golden.
Remove from the tin immediately and allow them to cool on a wire rack.