In my twenties, I was obsessed with the 1930s. There was a song I used to have on my iPod - Lullaby of Broadway - that used to make me wish I'd wake up one day in that glamorous era. The lyrics spoke of a girl out partying all night long: 'Baby goes home to her flat to sleep all day. Goodnight baby, goodnight, milkman's on his way.'
This cocktail uses a simple blackberry syrup that you can easily make, for this or for other uses (just as a cordial with sparkling water, perhaps, or as a topping for ice cream). It will keep in the fridge for a couple of weeks. The addition of lavender adds a bit of glamour to the proceedings but you can leave it out if it's not your bag.
Blackberry and lavender syrup (makes 100ml)
Juice of half a lemon
3 lavender heads or up to a tablespoon of dried flowers
Place all the ingredients into a small pan and heat over a medium hob for 15-20 minutes, until the berries begin to break up.
Strain, cool and bottle.
Lullaby of Broadway cocktail
1 tbsp blackberry and lavender syrup
1 tbsp Tanqueray no.10 gin
Sparkling wine, to top
Pour the syrup into a cocktail glass. Add the gin, then top with chilled sparkling wine.
Be warned: this is potent.