Using a few simple ingredients, you can make a stunning (and huge!) piece of candy that looks like a precious gem. And to cast it, all you need is some household equipment a little patience.
Step 1: Gather Your Ingredients
You will need:
Dry rice, flour, dried beans, beads, sand, or a similar substance (for the mold)
3 cups of sugar
1 cup of water
Few drops of food coloring
3 cups of white chocolate chips
1 tablespoon of cocoa powder
Oreo crumbs (optional)
Adapted from Ann Reardon
Step 2: Make Mold
Fill a large, shallow bowl or dish with your rice, flour, or other grainy substance. I used rice. Next, gently push down a smaller bowl, tilted slightly. (The rice underneath will help keep it in place). Completely cover the bowl with foil, making sure to smooth it out as much as possible.
Step 3: Make Sugar Syrup
On the stove over low heat, pour the water over the sugar. Heat the mixture until the sugar is just dissolved.
Step 4: Color, Flavor, and Leave to Dry
Once off heat, add your flavor and color until it looks how you want it to. I used a pretty pink food coloring and raspberry extract. Then pour the syrup into the foil mold.
Wait about 48 hours for the syrup to dry.
Step 5: Coat in First Layer
Remove the candy from the foil, and invert it over a glass. Cover the top with melted white chocolate.
Step 6: Coat With Second Layer
With your remaining chocolate, stir in the cocoa powder. This works better than regular melted chocolate, which looks shinier and less rock-like. Then, smother the geode with a second layer.
Step 7: Add Oreo 'dirt' (optional), and Invert
While the chocolate is starting to set up, you can cover it with oreo crumbs, which look like dirt. This is mainly for taste rather than aesthetics.
Once the chocolate is completely hard, carefully flip the candy over onto a plate. The chocolate will form pretty spikes around your finished geode.