By Tonia Buxton
To make lavender sugar, add fresh lavender (if it’s available) to light muscovado or demerara sugar in a jar, cover with a lid and leave for at least three days before using. If you don’t have any fresh lavender, add a drop of lavender extract to the sugar.
Cream the butter and sugar together until pale and fluffy. Beat in the eggs a little at a time. Add the blueberries and mix well.
Sift all the dry ingredients together, and add to the