1. Get out a large sheet of parchment paper or aluminum foil, place on a cookie sheet, and butter or oil it. Sit it by the stove, waiting to receive the brittle once it’s ready to pour.

2. Put the sugar, water and syrup into a saucepan, bring to the boil gently, then turn up the heat and let it boil for 8-10 minutes, swirling (but not stirring) the pan a couple of times, until the syrup has turned gold in color. It will be smoking by then, so be warned!

3. Take the pan off the heat and, with a wooden spoon, stir in the nuts, followed by the vanilla, butter and baking soda. You will have a golden, frothy, hot and gooey mixture.

4. Pour this briskly onto the waiting parchment or foil, using your wooden spoon to coax and pull it to make a nut-studded sheet, puddle-shaped though it may be, rather than a heap.

5. Leave it to cool, then break into pieces and store in at airtight container or box; or bag up to give at once as presents. You’ll get about 1 pound in total, and it’s up to you how much you want to put in each bag, really. I find it easier to do several small batches like this, rather than multiplying quantities as I cook.