In a bowl stir together yeast and water. Let the mix stand for 5-10 minutes. Add the warm Lactofree dairy drink, spreadable, salt and sugar. Add the flour and stir until the batter become smooth. Let stand for 30 minutes.
Stir in soda dissolved in water, leave to rise 20 to 30 minutes.
Grease griddle with a little Lactofree Spreadable and heat over medium-low heat. Drop batter into crumpets rings. Reduce heat to low, cover griddle and cook crumpets until tops look dry, about 10 minutes. Flip them over and cook for a couple of minutes. Serve toasted with Lactofree Spreadable.