Place chicken thighs in a small pan and add the water, ginger, garlic, and the cajun seasoning
Boil, cover then bring to a simmer and cook down until water dissolves
Remove from the stove then shred the chicken and chop to bite sizes
In a medium bowl, mix the mayo, sour cream, dijon, salt and pepper, cayenne, and mix. Add the chopped onions, celery and lemon juice and mix well to combine. Set aside
Heat a grilling pan on medium heat, spread butter on one side of each bread then toast each side. Place the toast onto a flat surface then spread the chicken mix evenly. Slice to a desired shape the serve right away. You can skip this step if not serving the sandwich right away.
Notes
Please note that the nutritional information is a rough estimate and can vary significantly based on the products used in the recipe