Stir with ice and strain into an old fashioned glass over one large rock.
For the coffee-pecan simple syrup: heat 1/2 cup brown sugar, 1/2 cup white sugar, 1/2 cup water, 1/2 cup brewed coffee, and 1/2 cup roasted pecans until the sugar dissolves. Simmer for 15 minutes, then strain and store in the fridge.
Charles Goodnight bourbon is 100 proof and not very sweet (almost more like a rye). If you're not able to find that particular bourbon, substituting rye is recommended to avoid an overly-sweet drink.
A tribute to someone I was lucky to know. Originally from Goodnight, Texas, he loved coffee, always saw the best in people, and took great delight in organizing an annual reunion in his hometown.