about ½ cup milk.
1kg white cane vanilla granulated sugar
1 tin (appx. 400g) sweetened condensed milk
100g unsalted butter
fresh milk to damp sugar
Equipment
large pan, not non-stick
big wooden spoon
glass of cold water
teaspoon
plate, as spoon rest and tester for mixture colour.
large shallow baking tray, carefully buttered.
Method
Damp the sugar with cold milk in the pan. Add the butter and the condensed milk, and turn the heat on medium-high.
It's an idea to put a little dollop of the uncooked mix on the spoon rest plate. I find comparing the colours of the mixture as it cooks a better way of judging readiness than using a sugar thermometer.
Keep stirring evenly until the mixture comes to the boil; this usually takes about ten minutes. If you start getting brownish streaks (caramel), turn the heat down a little, and keep up the stirring effort. If you get black streaks, you've burnt it. Good luck with cleaning the pan …
Once the mixture boils, turn the heat down low. Stir occasionally to stop the mix sticking. When it's simmering, the mix can be more than twice its original volume, so let's hope you've chosen a big enough pan.
You'll notice the mixture darken slightly; keep stirring now and then. It'll take about 20 minutes for the mix to cook.
Transfer a little of the hot mix to a teaspoon, and plunge it into cold water. It should form a soft, sticky ball that should drip off the spoon very slowly. When it does this, it's ready.
(I'd like to add that the goo on the spoon is very tasty, but be advised that it keeps its heat inside the glob. You can burn your tongue quite remarkably. Beware!)
Ready! I like my tablet a light colour, so it's usually done in twenty minutes or less (this took 18 from coming to the boil). If you prefer a stronger flavour, simmer for longer.
Now comes the difficult bit. Take the pan off the heat, and start stirring vigorously. Try to mix in some of the crystallized mixture that has formed on the side of the pan; what we're trying to do is to get the mixture to form large enough crystals that it will set, but small enough crystals that it will still pour.
Once you feel the spoon stirring slightly grittily on the base of the pan, and the mixture being slightly stiffer, it's ready to pour.
The above is much harder to explain than to do; you'll know it when you feel the change. Of course, let it set too long or too fast, and you'll end up with a trayful of gritty lumps looking alarmingly similar to a cat box.
Quickly pour the mixture into the buttered baking tray, which should be on a heat-resistant surface. Scrape out as much of the mixture as you can, as it will set in the pan to concrete hardness (believe me. Had to quite literally CHIP IT OFF WITH A KNIFE)
The colour changes, from uncooked mixture (cream coloured, in the middle -- almost the same colour as the plate) to the final colour, which is a golden fawn brown.
Once the mixture has fully cooled and set (usually overnight, if you can keep your paws off it that long), slice into bars or small chunks
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I first made this with my gran, years ago, but managed to lose the recipe until about a year ago. So found this online which, although more specific than Gran's written one is exactly the same. You are likely to desire help in the beating process at some point!! NEVER try to eat it immediately out of the cold water (who listens the first time;)
Good luck!