Originally Posted by indianwells:
“I just do a basic bechamel. Equal amounts butter and flour, stir until it smells biscuity, slowly add whole milk until you get the consistency you want, salt & pepper, a scraping of nutmeg.
You can flavour the milk a bit with half an onion studded with cloves and chuck in a few bay leaves but I can't be arsed unless it's a special meal, and I don't think it makes that much of a difference especially with the stronger flavours of lasagne.”
I was going to suggest almost exactly this!
For the last one I made (for a not huge cauli cheese, ie enough for 2 people) I used 30g plain flour, 30g butter and a third or so over a pint of *cold* (Delia tip) milk.
I always seem to end up playing the milk by ear! But the equal quantities of flour and butter has never failed me, as long as I don't get distracted during the crucial "getting them biscuity" initial stirring when you're cooking out the flour and butter.
In went a generous tbsp of Dijon mustard and around 70g grated cheese once the sauce was thick.
I also threw in around 10 black peppercorns and then wished I'd just ground some in, as fishing them out of the thickened sauce was messy... Plus a bay leaf and two cloves as I had them sitting around and they did give a nice savouriness and 'warmth'.
One technique that works for me is that when starting mixing the milk in I whisk like a crazy dervish. Also, don't be deceived by the consistency in the first minute or two of mixing the milk in, as it will get thicker. Then when it's integrated, as indianwells says you can whisk in more milk if you think it needs it.
Hope it goes well!