Canh Suon Bi Do / Kabocha Squash Soup with Pork Spare Ribs

This is another Vietnamese soup you will almost never find on a restaurant menu, as canh suon bi do is a true homestyle soup, the kind of dish that shows up alongside a few simple mains and a plate of rice as part of a complete com gia dinh, or Vietnamese family meal. These soups are not meant to steal the spotlight; they round out the table, bring balance, and provide warmth and nourishment at the end of the meal. That is exactly what this soup does. Light, gently sweet, and deeply comforting, canh bi do is a kabocha squash soup simmered with pork spare ribs, charred aromatics, and a delicately seasoned broth. It is easy to make, incredibly soothing, and should be familiar to anyone who grew up eating Vietnamese home cooking. This is the kind of soup that helps you slow down, finish your meal, and feel cared for. If you are looking for an authentic Vietnamese soup recipe that reflects how families actually eat at home, this is it.

What Is Kabocha Squash

Kabocha squash, often called Japanese pumpkin, is a winter squash with a deep green rind and bright orange flesh. In Vietnamese cooking, it is commonly called bí đỏ and used in both savory soups and sweet desserts.

Taste and Texture

Kabocha squash is round and squat with a thick, dark green skin that sometimes has faint, lighter streaks. Inside, the flesh is dense and vibrant orange with a fine, smooth texture once cooked. Kabocha squash is naturally sweet with a mild chestnut-like flavor. When simmered in soup, it becomes tender and creamy without turning watery or stringy. It absorbs savory flavors beautifully while still maintaining its own sweetness.

How to Prep Kabocha Squash

There are two common methods for preparing kabocha squash for Vietnamese soup. You can peel off the thick outer rind before cooking, or leave it on. For this soup, I personally prefer leaving the peel on. As the squash simmers, the rind softens significantly and loses its toughness while adding a subtle textural contrast to the soup. It also helps the squash retain its shape, so it stays tender without falling apart. On a practical level, kabocha squash is notoriously difficult to peel, so leaving the skin on makes this recipe faster and easier.

To prep the squash, cut it in half, scoop out the seeds, and slice it into bite-sized pieces. If you prefer a softer texture throughout, you can peel it, but both methods work well.

How to Make Canh Suon Bi Do

This Vietnamese pork rib and kabocha squash soup is straightforward and forgiving. The key is to build a clean, lightly seasoned broth and let the ingredients do the work.

Prep the Ingredients

Start by parboiling the pork spare ribs. Add the ribs to a pot of boiling water and let them cook for about 5 minutes. This step removes impurities and excess blood that would otherwise cloud the broth. Drain the ribs, then rinse and scrub them thoroughly under cold running water. This is one of the most important steps for achieving a clear, clean-tasting Vietnamese soup broth. Once clean, cut the ribs into smaller pieces between the bones.

Next, prep the kabocha squash. If desired, peel the outer skin, then cut the squash in half and remove the seeds. Slice into bite-sized chunks and set aside.

Char half an onion and a small nub of ginger until deeply fragrant. You can do this in a dry pan over high heat, directly over an open flame, or under a broiler. The charring adds depth and subtle smokiness to the broth. Finely chop green onions and reserve them for garnish.

Cook the Soup

Add water to a pot and bring it to a rolling boil. Add in the cleaned pork ribs along with the charred onion and ginger. Bring the pot back to a boil, then skim off any remaining impurities that rise to the surface. Lower the heat and let the soup simmer gently, covered with a slight crack, for 30 to 45 minutes until the pork is mostly tender.

Once the pork has softened, add the kabocha squash to the pot. Season the soup with MSG and fish sauce. These seasonings should enhance the squash’s natural sweetness rather than overpower it. Continue simmering for an additional 10 to 15 minutes, until the squash is tender but still holds its shape. Taste the broth and make final seasoning adjustments as needed.

Serve

Serve canh suon bi do hot, either with rice in the bowl or on the side, as part of a family-style Vietnamese meal. Garnish with chopped green onions and freshly ground black pepper. Enjoy!