1. Preheat the oven to 200C/400F/gas mark 6. Line a tin with 9 American-style muffin cases.
2. Sift the flour, baking powder and bicarbonate of soda into a bowl, then stir in the rest of the dry ingredients.
3. Add all the remaining ingredients and beat well for 1-2 minutes until evenly mixed. Divide among the paper cases and cook towards the top of the oven for 20-25 minutes until risen and firm.