Special equipment: 12-cup muffin pan lined with 12 paper baking cups
Preheat the oven to 400 degrees F.
Mix the flours, baking powder, baking soda, salt, mustard powder and cheese in a large bowl with a fork. In a large measuring cup, beat together the remaining ingredients. Pour into dry ingredients, mixing lightly with your fork, remember that good muffins are made from lumpy batter.
Pour into muffin cups and cook for 20 minutes, then quickly take them out of the oven and put a little cheese and sprinkling of Worcestershire sauce on each one. Put them back in the oven for another 5 minutes, and then put the muffins on a baking sheet to cool. Eat them while they are still warm but not hot.