Combine sugar and hot water in a saucepan.

Add cherries and their juice to the saucepan.

Bring the mixture to a boil over medium heat, stirring until the sugar dissolves.

Remove from heat and add the cherry Jell-O powder.

Stir until the Jell-O is completely dissolved.

Let the mixture cool to room temperature.

Add crushed pineapple (undrained) and Coke to the cooled Jell-O mixture.

If desired, add nuts.

Transfer the salad to a serving bowl or individual cups.

Refrigerate for at least 2-3 hours, or until set.