If you can mess with the mix a bit you can prevent re-crystallization by adding a different type of sugar and by damaging the bond between the sucrose and fructose that make up table sugar. If you take your sugar and add some corn syrup and a couple of pinches of cream of tartar you won't get any unwanted sugar crystals forming as you have prevented (by adding sugar molecules of different types) the ability of the sugar molecules of snapping into place.
So what is caramel? Its really abused sugar. We abuse it through heat and this breaks down the sugar into dozens of different compounds which take a one act flavor uptown to Broadway and sweets heaven.
WARNING: There is not much in the kitchen that is more dangerous to someone half paying attention to what they are doing than melted sugar. It will stick to skin and burn you horribly so be safe, careful slow and deliberate. This is NOT a family activity the only things kids should do with this stuff is eat the end product. Also have a bowl of ice water handy. If ANY molten sugar at all contacts your skin IMMEDIATELY plunge that part of your body in the ice water (so not joking here).
Daddy's nut brittle
2 cups of sugar
1lb of nuts plus some spices The combos I enjoy are:
peanuts and cinnimon
cashews and cinnimon
and macadamia and nutmeg
1 tsp of vanilla (your homemade version previously posted of course)
2 cups of sugar
1/4 cup of corn syrup
2 pinches of cream of tartar
1/2 cup of water
Optional 1 tbsp baking soda.
Toss the nuts, vanilla and spices together and set aside.
Take your cast iron pan
Dump in the pan the sugar, corn syrup, cram of tartar and water and stir (should have a wet sand consistency). This mix will eventually melt and begin to boil. As the water evaporates you will see the bubbles slow then it will trun barely yellow then to a light amber, dark amber almost brown then black. If you see black then you have gone too far. A color between light and dark amber is a good place to be. How long does it take for the mix to turn back? It happens the instant you don't pay attention so be sure that you have nothing going on during this operation.
Once you have reached the right color and smell dump in the nuts and optional baking powder and stir (it will bubble a lot so be careful). Once the bubbling has subsided pour onto a prepared surface (parchment paper
Adding in the baking soda will make the brittle opaque as well as easier to bite so it can be a good thing. If you add enough nuts though you will not need the powder to make it biteable. Final tip? Use salted nuts. A little salt makes sweets soo much better. Also create your own combination of flavors, like honey in with the sugar mix, pistachios and anise seeds. Whatever flavor combination you think might work, try and have fun, but please be safe.