Mix Hot Cross Bun mixture but leave out spices and sultanas.
After dough has risen mix in to it 1/2 cup warm water and 1/2 tsp. baking soda.
Leave 1/2 hour till surface is covered with bubbles.
Meanwhile grease crumpet rings which could be old fish tins.
Grease frying pan and heat it. Place greased rings in pan and ladle mixture into rings being careful not to stir the bubbly mixture.
When the top has almost set, take rings off and flip crumpets over to cook other side. Remove from pan and cool on rack.
Just before eating, toast on each side and served buttered.