how to make kadha for cough - #25089

I am really struggling with this persistent cough for the past few weeks. I’ve tried multiple over-the-counter meds but nothing seems to work. A friend mentioned that I should try kadha, but I honestly have no idea how to make kadha for cough. I heard it’s super effective, but do I just throw everything in a pot and boil it? What kind of ingredients should I use? I've read stuff about ginger and tulsi, but I'm not sure what ratios are right, or if something else might help too. I feel like I’m just wasting time, and I'm tired of the nagging cough especially at night!! Yesterday I added some honey to warm water thinking it would soothe my throat but didn’t help much either. I want to try this kadha thing, but do I need any special preparation or do I just drink it regularly? Could really use some guidance on how to make kadha for cough, plz help!