Clam Chowder with seasoning

8 lbs small quahogs or 8 lbs cherrystone clams 4 slices bacon , cut into 1/2 inch pieces 3 tablespoons unsalted butter 2 cups finely chopped yellow onions 1[...]

2 large russet potatoes , peeled and cut into ½ inch pieces (or 1 1/2 lbs.) 1/2 cup butter 3 celery ribs , chopped 1 medium onion , chopped 2 teaspoons minced[...]

1 lb potato , peeled 1/2 tablespoon butter 3/4 cup finely chopped onion 1 small garlic clove , very finely minced 1 cup half-and-half 1/2 cup whipping cream 4[...]