Butterhead lettuce with lemon cream

Ah. Like my mum does it:

1 butterhead lettuce (Kopfsalat), wash well and plug apart

1 shallot, lemon juice, salt, pepper, sugar, cream and some olive oil for the dressing. You want it lemoney, but not too sour. Try to have the finely chopped shallot sit in the juice for a bit if you can. This dressing will really unfold if you can afford to leave it alone for a bit.