As per experts, adding tulsi leaves to food, water pots, not just prevent bacterial growth but also help in the bounce back of immunity. In older times, without refrigeration, food was more prone to quick spoilage. Tulsi leaves helped slow bacterial growth and kept food fresher for longer. According to experts, eclipses were seen as times when cosmic energies could disturb natural balance. Tulsi, regarded as holy, was believed to safeguard food from negative energies.