I got this recipe from UKTV Food, James Martin: Sweet
As always, I did it slightly differently... but it makes limoncello as I know it - very strong sweet lemony sipping drink.
150 ml water
700ml vodka (I bought the second cheapest... ie not the very worst.. but nothing special!)
Peel the lemons with a potato peeler to get the zest only, and put this along with the juice and any flesh that comes out when you juice, into a heatproof bowl.
Put the sugar and water in a pan and bring gently to the boil, stiring to dissolve the sugar. the boil rapidly for 3-4 minutes until the mixture looks syrupy. Turn off the heat and wait until its cooled just a little, then pour over the lemon peel and juice. When this mixture is fairly cool add the vodka, saving the bottle for later.
Mix everything up then place in a jar (or jars, but make sure the peel is evenly distributed if you have to divide it), and leave it somewhere out of direct sunlight, where you will notice it. Shake the jar whenever you come across it. A month later strain and bottle, and its ready to drink. Keep it in the fridge ready chilled for drinking!
Serve in small shot glasses, ice cold.
©colour it green 2007