I'm going to a party & I need to take Shortbread...

 These were the sweet words 
the tweenager mentioned yesterday. 
"Actually I told them you can make shortbread,"
he added. Sort of quietly.
A few hours before he needed it. 
So I pulled out the trusty Kenwood
and my grandmother's recipe,
and shortbread it was. 
It's a fail-safe recipe which my grandmother,
being Scottish, could make by heart.
And not surprisingly, 
there isn't a single bit left!

All images & recipe: blue fruit.