next, your sugar syrup comes to 285 F, remove the pan from the heat immediately. Let the bubbles subside in the candy, then stir in the peppermint extract. (Note that different extracts have different strengths, and you may want to adjust the amount of peppermint extract for subsequent batches.Unfortunately there's no way to taste scalding sugar to determine whether you're adding enough flavoring when in the middle of the recipe!)
When the mint flavor is mixed in, pour approximately half of the sugar syrup onto one of the prepared baking sheets and place it in the preheated oven to stay warm.