Spaghetti with Ripe Olive Clam Sauce

3/4 cup canned pitted ripe olives
1 (8 ounce) can minced or chopped clams
Milk
2 tablespoons butter
2 tablespoons flour
1 teaspoon onion powder
1/2 teaspoon salt
1/2 teaspoon Worcestershire sauce
2 teaspoons lemon juice
2 drops Tabasco