Quoc Viet Foods - Wonton Soup Base 10oz Cot Sup Hoanh Thanh Brand

If I use just cut up chicken tenderloin does it need to be cooked first before adding in the water, onion and ginger?

Is this product Gluten Free?

How much of this should I use if I only want to make a bowl of Pho?

Would this be good as a base for ramen if I add tonkatsu soup base as well?