Kadha or decoct very helpful at time of cold. I don't know where my mom comes to know about this but I know it from her. So i always call it's mom's kadha. For making kadha we need: Tulsi leaves Ginger Whole black pepper . Bay leaves Misri or rock candy Ghee Water Method: Take a saucepan on gas stove now add 1 and 1/4 cup water, 2 bay leaves, 7 Tulsi leaves, one small ginger, 5 whole black pepper crushed and Misri( rock candy) for sweetness. Boil it on low flame till it becomes 1 cup. Now strain it using a tea strainer in a cup and final add half teaspoon ghee. Kadha is ready to drink. Take it every day early morning in empty stomach. It really helps in cold. Note: You can use honey instead of Misri or rock candy but after you strain decoct or kadha. Don't try to give it to kids under 10 years.