Pastel de Pollo - Potatoes USA - Philippines

Ingredients

• 3/4 cup unsalted butter
• 1 pc. white onion, coarsely chopped
• 1-1/2 kgs. whole chicken, cut into stewing pieces
• 1/2 cup sherry or white wine
• 1/3 cup flour
• enough water or chicken stock/broth to cover meat
• 1 pc. chorizo de Bilbao, coarsely chopped
• 2 pcs. carrots, peeled and sliced into 1/2-inch rings
• 3/4 cup button mushrooms, fresh or canned
• salt and pepper to taste
• mashed U.S. Fingerling Potatoes (recipe below)
• grated Parmesan Cheese for topping (optional)
• 1 kg. U.S. Fingerling Potatoes, peeled and washed
• 1/4 cup unsalted butter
• 2 Tbsps. heavy cream
• salt and white pepper to taste