Carefully place a wooden BBQ stick into the side of a hazelnut. It needs to be far enough in so that the nut doesn't fall off, but not too far that it breaks the nut.
Prepare an area to work at, line with lots of baking/parchment paper as the caramel is very sticky. Also the hazelnut spikes need to hang off the end of a table or counter/worktop. So you will need paper on the floor too, to catch the excess, that you can still use. As well as something like books or pegs/clips to hold the bbq stick down & from rolling.
Also prepare your stove & have your ingredients ready, as well as a small dish of water & a small brush. This is for in case you see any crystals on the sides of the pan. If you do, simply brush some cold water on the sides to stop the crystallization spreading into the caramel. Also have a trivet ready at the other work area for placing your pot of hot caramel down.
Begin by adding the sugar to a heavy bottomed pot that is not non-stick. Then add in the water & do not be tempted to mix. This is key to caramel making. Next add in the lemon & again no mixing. Turn on the heat to med-high setting & then add a sugar/candy thermometer if using.
Let the sugar come to a boil with no mixing at all. You can occasionally shake the pan a little, just to make sure the sugar is evenly spread on the bottom of the pan
Here are the stages that the sugar mixture goes through. The sugar will start to get moist and then begin to bubble gently around the edges. If there are some clumps of sugar in the centre of the pan – you can shake the pan a little (see video & Photo 7).
Next it will start boiling all over the surface: it will be gentle at first, with steam & you will be able to hear it. Note the colour at this point – dip a small spoon in and it will be a clear colour.
Let the sugar mixture rapidly boil. Keep it boiling & it will start to smell, kind of like honey. Colouring will be starting & the bubbles will be wider & have a burst-like appearance. Keep watching & when you notice it starts to colour, check with a spoon for comparison.
Let it colour at bit more -I like to aim for almost coming to a medium amber colour. See Photo 8. Remember it will colour & caramelize more once off the heat so you want to take off just before it’s ready. If using a sugar/candy thermometer, the temperature will be about 172°c/341°f (after it get’s to 160°c/320°f keep a very close eye and be ready to remove). Turn off the heat & remove from the stove.
Working quickly, dip the hazelnuts that are on a bbq stick, into the caramel to coat completely. Then move to the area you have prepared to hang them & hold in place with a book for example. Let the caramel drip down & set in a 'spike' shape. See Photo 9 below. You can also use a spoon to help, but the caramel will harden on this. Be very careful with the dipping as the caramel is very hot, & also the hazelnuts sometime fall off the stick.
Dip as many. hazelnuts as you can and whenever the caramel is hardening & making it too difficult to dip, pop back on the stove top & heat gently till ready for dipping. If using a spoon, warm this in the pot too, & any hardened caramel on the spoon will slide off.
With left-over caramel, do any shapes or designs you like, on top of some baking/parchment paper. See Photo 10 below. Once done, steep the pot, with some boiling water and this will help cleaning up later.
Once the hazelnut spikes are set, I stand the bbq sticks up in an extra large jug till ready to use. You can cut off the ends to whatever length you want. There will be extra fine strands of caramel formed on the paper you had on the floor. These can be scrunched together and used too.