Set your oven to 180°C | 160°C fan | 350°F | Gas 4
To prepare ground lavender simply wash the dried flowers thoroughly and tip onto kitchen towels to dry completely. Once bone dry add to a blender and blitz until you have a fine powder.
Gluten free flour thickens more than normal flour due to the different grains used. For example, a flour using a rice flour blend will swell as you’d expect when you boil rice.