Corn and Crab Chowder

Bahan-bahan (4 porsi)

• 16 ounces frozen white corn (don't thaw), (divided)
• 1 cup 2% low fat milk
• 8 ounces clam juice
• 4 tablespoons sliced green onions, (divided)
• 2 teaspoons minced fresh ginger, (divided)
• 2 tablespoons butter
• 4 ounces cooked crabmeat, (flaked)
• salt and pepper, (to taste)
• oyster crackers, for garnish ((optional))