Place the pork ribs in a pot with room temperature water.
Bring to a boil. (Starting with room temperature water helps draw out impurities.)
Remove the pork ribs and set aside.
Prepare the carrots
Trim the ends and cut into large chunks.
Set aside.
Prepare the old cucumber
Clean the cucumber thoroughly and scrub with a bit of salt under running water.
Trim the ends, slice in half, and remove the seeds.
Cut into large chunks.
Cook the soup
Add pork ribs, carrots, and old cucumber into a large pot.
Pour in water and bring to a boil.
Simmer the soup
Reduce to the lowest heat and simmer for about 4 hours.
Season the soup
Add salt and mix well.
Notes
Start with room temperature water: This helps draw out impurities from the pork ribs for a cleaner broth.Blanch the ribs first: Blanching removes impurities and improves the taste of the soup.Scrub the cucumber with salt: This helps clean the skin thoroughly without peeling it.Cut ingredients into large chunks: Larger pieces hold their shape better during long simmering.Simmer on low heat: Gentle simmering allows the natural sweetness of the ingredients to develop.