Cooking oil can be converted into vegetable ghee by the process of:

🧠 Explanation:

• Hydrogenation is the chemical process used to convert liquid cooking oil into semi-solid or solid vegetable ghee.
• This process involves adding hydrogen atoms to unsaturated fats in the presence of a metal catalyst, typically nickel.
• The result is an increase in the saturation level of fats, making the oil more stable and giving it a longer shelf life.
• Hydrogenated oils are commonly used in food industries to improve texture and storage but may raise health concerns due to trans fats formation.