Concept:
The "Spice Bag" method is a specific culinary technique used in fruit and vegetable processing to impart flavor without affecting the physical clarity or color of the product.
• It involves placing whole or coarsely ground spices in a muslin cloth bag.
• The bag is suspended in the boiling liquid during the cooking process.
• This prevents the solid spice particles from remaining in the final product.
Step 1: Understanding the requirement for Ketchup.
Ketchup and sauces require a smooth, uniform texture and a bright red color.
If spices like cloves, cinnamon, or black pepper were added directly, they would leave dark specks.
Step 2: Mechanism of the spice bag.
The bag is tied to the side of the boiling kettle and squeezed periodically.
This ensures that the essential oils and flavors are extracted into the tomato pulp.
Step 3: Final Identification.
Once the desired flavor profile is achieved, the bag is simply removed.
Therefore, this method is fundamental to high-quality Ketchup/sauce production.
Final Answer: (D)