You will need:
120 mls of milk
Some lavender flowers (cut them straight off the bush and give them a little rinse)
120g plain flower
140g caster sugar
1.5 teaspoons of baking powder
Dash of vanilla extract (optional)
40g of butter
1 egg
A couple of hours before I want to make the cakes, I put the lavender flowers into a jug of milk, cover it, and leave it to steep. The longer you leave it, the stronger the flavor. I add a little extra milk so that I can use it for the icing as well, where the taste is slightly stronger.
I preheat my oven to 170c, then I get on with creaming the butter and the sugar together. There's not a lot of butter in this recipe, so it won't be as smooth as normal, so I just cream it until it's all combined and crumby. Then I beat in my egg, and add a couple of drops of vanilla extract. Next comes the flour and the baking powder. I don't bother to sieve it, because my idol Lorraine Pascal doesn't, but you can if you'd like to. I fold in the flour, and then pour the lavender infused milk through a sieve into my batter. I mix it into a soft dropping consistency, where it plops off my spoon if I give it a little shake. I put the batter into my cake cases, and bung them into the oven for 20 minutes. I use muffin cases for cupcakes, but if you want to make fairy cake sized ones then just reduce the cooking time a bit, and be prepared to make about 18, rather than 12.
While the cakes are baking, I whip up my icing. For that, I need:
125g of icing sugar
40g of butter
Food colouring
And a few drops of lavender infused milk.
I beat the butter and the icing sugar together until they're all combined, and it begins to get nice and fluffy. Everything I've read says that you should use a food processor for this, but I don't have one, and I've found that a wooden spoon does the job fine if you use a bit of elbow grease. Look at it like a workout to justify your cake at the end!
Once my icing is nice and soft, I add some food colouring to make it a nice lilac colour. I don't have any purple food colouring, but I do have a bottle of blue and a pot of pink. With a bit of experimentation I get a pretty soft purple, and the added bonus is that by beating in all that food colouring, my icing has got a lot fluffier.
To finish, I beat in the lavender milk and spoon it over the top of my cupcakes. The icing recipe here is actually a half quantity, from the Hummingbird Bakery Cookbook, but I never like a lot of icing on my cakes. If you're the opposite of me, which I know a lot of people are, just double it. I put a little sprig of lavender on the top of each cake, and I'm done. All in under an hour, which gives me plenty of time to eat them.