Mix the flour, salt, pepper and eggs together. Whisk in the milk until you have a smooth, bubbly batter. Leave to rest for at least 30 minutes, or overnight.
Preheat the oven to 200C. Grease your muffin tins with a little oil and pour in your batter. Bake for around 20 - 25 minutes until puffy and risen. Serve immediately.