Prepare the baking sheet by greasing it with butter or cooking spray.

Combine granulated sugar, unsalted butter, corn syrup, and a pinch of salt in a medium saucepan. Heat until boiling.

Cook until the mixture reaches 300°F, around 10-15 minutes without stirring.

Remove from heat and stir in baking soda; mix well until bubbling and color deepens.

Pour the mixture onto the greased baking sheet and spread evenly.

Allow to cool undisturbed for about 15-20 minutes until hardened.

Break into irregular pieces to reveal cracks.

Optionally, add food coloring before it sets for a marbled effect.

Store in an airtight container at room temperature for up to two weeks.