Winter immunity blends, often herbal infusions rather than true tea, can support immune function, digestion, and respiratory comfort during colder months. These blends, made from spices, herbs, seeds, or roots steeped in hot water, are recommended by dietitians to help the body manage seasonal stressors and fight off common illnesses like colds and coughs. Ingredients like ginger, known for its antibacterial and anti-inflammatory properties, and Tulsi, an adaptogen, are highlighted for their supportive benefits.