In a large Dutch oven, melt butter then add and sauté celery, onion and bell pepper. Once vegetables are soft and clear add half and half, cream and chicken stock. Stir well and let simmer to reduce for 10 to 15 minutes.
Add corn and cheese, simmer and reduce.
Season with a few drops of hot sauce and some white pepper. Adjust seasonings to taste.
Finally, add 1 pound of crawfish tails and heat through.
If you like a thicker chowder, sprinkle in some instant mashed potato flakes to the desired consistency and remember to adjust your seasonings.