Generally speaking, sweet soups that have beans in them will use brown rock sugar that is in slabs. They usually come in 400 g packages with 5 slabs. I used 2 slabs which I thought was a good sweetness but my mom found it too sweet. So, maybe start with 1 slab and keep adding until you find the right sweetness.You may serve with ice cream, grass jelly and/or shaved ice.Not recommended for pregnant women. Best not to be consumed on an empty stomach.
20gRue herb(aka Common Rue, Ruta Graveolens, Stink Grass)
5gDry mandarin peel
2LWater
1-2slabs Brown rock sugar(aka pian tang/peen tong, slab sugar, approx. 80g/slab)
Instructions
Soak green beans for 1 hour in water
Soak kelp and mandarin peel for 30 minutes separately
After 30 minutes, rinse kelp kelp has a natural powder-like white substance that forms on it; it’s not mold. After soaking, it will be slippery, so be careful when you’re slicing it
Take half of the kelp, fold and slice into thin strips. I usually discard the other half after cooking because I can’t eat that much but I want the jelly-like substance that it gives to the soup. Of course, you may also julienne all of it as well.
For the mandarin peel, use a knife and scrape off the white parts which may add bitterness to the soup
Bring 2 L of water to a boil. Add mung beans, kelp, rue herb and mandarin peel. Bring to a boil again. Lower the heat to medium so that it is at a simmering boil You want there to be some bubbles and the mung beans should be moving around in the water. Cook for 60 minutes, give it a stir every 20 minutes This cooking time will give you very broken mung beans. The finished product in the photos have the mung beans being less broken. This is because I wanted to add it to vanilla ice cream and grass jelly. If you’d like to do this too, cook for 30 minutes on medium (instead of 60 minutes) and then 20 minutes on low
When 60 minutes are up, remove the large pieces of kelp, mandarin peel and rue. Discard
Turn heat to low and add sugar. Cook for 15 minutes
Taste test. Add more sugar if necessary. Cook until sugar dissolves