Sift the yeast and flour into a large mixing bowl, add the sugar and mix together.
Warm the milk in a small saucepan until it reaches 20°C or 68°F. Add it to the flour mix with the water and beat until it reaches a smooth mix.Cover the bowl with cling film and set aside in a warm room for 2 hours.
It should be halfway between single and double cream in texture.
Whisk in the bicarbonate of soda and salt.
Heat a heavy-based frying pan over a heat just below medium. Add a little oil into the pan and then pour in 1.5cm (just over ½") of the mix into 10cm (4") baking rings.Allow the crumpets to slowly cook; they will take around 8-10 minutes.
When cooked, the top of the crumpet will be dry and pockmarked.
At this point in time, you can flip them over and cook for no more than 60 seconds.
Video
Notes
Adapted from Dan Leppard: Baking with PassionThe calorific value of this recipe does not include the butter you add after, that is all your fault :D ;)