Tiger Mike's Tan Kwe Special Soup

Dear Ah Swee,
This is for Jeannie. I am afraid you have to do it for her at any time of her own choosing. This clear soup appetizer must be served hot. My mother-in-law swears by it. I surmise it must help the ang ang tua tua liap.
The Tan Kwe Special Soup.
250 g winter melon (about half a medium-sized melon)
1 knob of lengkuas – lam keong (crushed)
1 large chicken breast
1 fistful of sliced tan kwe
150 g small prawns
800 millilitres water
1 teaspoon salt
1 teaspoon Thai fish sauce
1 tablespoon of sesame oil (optional)
Skin winter melon and remove seeds and soft pith. Cut into 5x3x1 cm pieces. Cut chicken breast into medium sized cubes and shelled prawns.
Bring water to boil with lengkuas and tan kwe and cook chicken for 2 minutes. Add melon and prawns and simmer for five minutes. Add seasoning serve. If you like fold in the sesame oil.
I have been taking tan kwe gin to improve my haemo problem. It comes in a small bottle from any refutable sin seh shop. Made by Chung-Lien Drug Works, Hankow, China. I assure you that there is no contraindication. No chemicals, ma!