Dinner chowder recipe

Ingredients

• 2 large potatoes, diced
• 1 large white onion, diced
• 2 celery stalks, diced
• 1/2 teaspoon black pepper
• 2 cups vegetable stock
• 2 tablespoons butter
• 2 tablespoons flour (whole grain works fine)
• 2 cups milk
• 1 1/2 tablespoons Worcestershire sauce
• 1 tablespoons mustard powder
• 1 to 1 1/2 cups grated Cheddar cheese
• 1 (28 ounce) can tomatoes
• Chopped parsley