Sauté bacon in butter until crispy, then set aside.
Sauté celery, onions, jalapenos, scallions, and garlic in the bacon-and-butter fat until soft.
Add potatoes, salt, pepper, and bacon to the softened vegetables.
Pour in the broth and bring to a strong simmer.
Whisk cornstarch into water to form a slurry and stir it into the soup.
Bring the chowder base to a boil.
Turn down the heat and stir in frozen corn and heavy cream.
Lay salmon pieces on top of the simmering chowder, cover, and simmer until cooked.
