Preheat oven to 375 degrees F and line a baking sheet with parchment paper.
In a large bowl, combine the peanuts, pecan halves, cayenne, Essence, Worcestershire, lemon juice, and melted butter, tossing to coat well. †Spread mixture evenly over the prepared baking sheet and bake for 10 to 12 minutes. Remove from the baking sheet and cool on parchment paper or paper towels. Combine the cooled spiced nuts and popcorn and divide evenly between 2 lightly greased baking sheets with 1/2-inch edges. Reduce oven temperature to 250 degrees F.
In a medium saucepan, combine the remaining unsalted butter, sugar, and cane syrup over medium-high heat. Bring mixture to a boil, stirring constantly. Remove from heat and stir in baking soda. Pour hot mixture evenly over both baking sheets of popcorn and nuts. Using a lightly greased spatula, stir the mixture well so that everything is evenly coated.
Bake for about 1 hour, stirring occasionally. Remove caramel corn from the baking sheets and cool completely on waxed paper. Store in an air-tight container for up to 1 week.
Yield: about 3 quarts