Vanilla Yogurt with Broken Raspberries and Doughnuts

Homemade yogurt is really simple to prepare and is a fascinating process to watch. The doughnuts are very cool things to make at home too - you need fresh yeast and a dash of patience, but the overall results are great. (They lasted exactly 2 minutes on the photoshoot for this book!) The citrus sugar is zingy and fresh, but you could use vanilla sugar or cinnamon sugar as alternatives.