Gloria's Sausage Gravy with Biscuits

INGREDIENTS

• 1 pound sage flavored ground breakfast sausage
• 2 tablespoons finely chopped onion
• 1 tablespoon all-purpose flour
• 1 cup milk
• 1/2 teaspoon poultry seasoning
• 1/2 teaspoon ground nutmeg
• 1/4 teaspoon salt
• 1 dash Worcestershire sauce
• 1 dash hot pepper sauce
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• 2 packages active dry yeast
• 1/4 cup warm water (110 degrees F/45 degrees C)
• 2 cups warm buttermilk (105 to 115 degrees F/43 to 46 degrees C)
• 5 cups all-purpose flour
• 1/3 cup white sugar
• 1 tablespoon baking powder
• 1 teaspoon baking soda
• 1 tablespoon salt
• 1 cup shortening
• 2 tablespoons butter, melted