Lemon drop

Nigella: "This is citron presse for grown-ups: frosty-white, acid sharp and as deeply lemony as you could want.

Ingredients:

1 lemon, peeled and quartered
1 tablespoon caster sugar (or sugar syrup)
50ml limoncello or other lemon liqueur
50ml Triple Sec
handful of ice cubes
Instructions:

Put the lemon pieces into the goblet of a blender, sprinkle over the sugar and leave to steep to let the sugar dissolve for a few minutes (if you’re using sugar syrup, just bung it all in, everything you’ve got, and blitz away) then pour in the limoncello and Triple Sec, tumble in the ice cubes and whizz away on the cocktail-shaker setting or however your blender is organised. When everything’s combined, thickened and ice-white, pour into a large tumbler and knock back.