Brussels Sprouts in Beer

450g / 1lb Brussels sprouts, trimmed
480ml / 16fl.oz. dark beer
1/2 teaspoon salt
3 tablespoons butter

Place the sprouts in a medium saucepan and pour in enough beer to cover.
Bring to the boil, then reduce heat and simmer for 15-20 minutes or until tender, adding more beer if necessary.
Drain well then return to the pan, season with salt and add the butter.
Stir over a low heat until the butter has melted and coated the sprouts. Serve immediately.