01 -
Line a flat tray with parchment or suitable foil. Prepare the crushed candy and dry tools. Check that any peppermint oil is food-grade and intended for chocolate; follow its concentration guidance.
02 -
Gently melt the chopped dark chocolate, stirring and removing it from heat when the remaining small pieces can melt in residual warmth. Keep water and steam out of the bowl.
03 -
Add the specified small amount of suitable peppermint flavoring and stir. Spread the dark chocolate evenly over an approximately 8-by-12-inch area on the lined tray.
04 -
Let the dark layer partly set: it should hold its shape while remaining receptive to the topping. Do not rely on a fixed timer or deliberately chill it into a completely hard sheet.
05 -
Gently melt the white chocolate using its label directions. This simple method is not a full tempering procedure and does not guarantee a tempered finish.
06 -
Mix half the crushed peppermint candy into the white chocolate. Spoon across the dark base in several patches and spread lightly into an even layer without pulling up the base.
07 -
Scatter the remaining candy over the white surface while it can still adhere, pressing gently. Leave the tray level until the whole slab is set.
08 -
Lift with support underneath and break or cut into portions on a board. Store covered with parchment between stacked layers, following the storage guidance above.