Dinner · Part 1 of 3: Ingredients
Slow-Cooker Japanese Chashu Pork Belly for Ramen

- Prep
- Cook
- Total
- Serves
- 6
Achieving restaurant-quality Chashu at home is surprisingly straightforward when you let your slow cooker do the heavy lifting. This method produces pork belly that is succulent, tender, and deeply infused with a signature savory-sweet soy glaze that defines authentic ramen.
By slow-braising the meat with traditional aromatics like ginger, garlic, and scallions, you develop a depth of flavor that is simply unmatched. It is the perfect project for a weekend meal, yielding enough to crown several steaming bowls of noodles for family or guests.
Chashu is a cornerstone of Japanese ramen culture, prized for its melt-in-your-mouth texture and rich, savory profile. Traditionally, this involves a long, attentive stovetop braise, but using a slow cooker simplifies the process significantly while maintaining the integrity of the dish.
This recipe focuses on creating a concentrated, flavorful braising liquid that caramelizes the pork as it cooks. Once finished, the result is a beautiful, glossy log of pork that can be sliced thin and served over your favorite broth, providing a luxurious finish to any noodle dish.
Ingredients
- 3 lb pork belly, rolled and tied with butcher twine
- 1 cup soy sauce
- 3/4 cup mirin
- 1/2 cup sake
- 1/3 cup sugar
- 1 bunch green onions
- 6 cloves garlic cloves, smashed
- 1 piece fresh ginger, sliced
Why this recipe works
The slow cooker method provides a gentle, consistent heat that breaks down the connective tissue in the pork belly without drying it out. This slow process allows the fat to render perfectly, resulting in the signature buttery texture that makes Chashu so desirable. By keeping the lid closed, you maintain a moist environment that encourages the meat to absorb the aromatics.
Cooking in a concentrated soy-based liquid allows for a natural reduction and glazing effect. As the pork braises, the sugars in the mirin and added sugar react with the savory soy, creating a complex, umami-rich coating. This technique ensures that every slice of pork is flavorful throughout, rather than just on the surface, making it the ideal accompaniment for a mild ramen broth.
Notes and substitutions
When selecting your pork belly, look for a piece with a good ratio of lean meat to fat, as this balance is key to the final texture. If your pork belly is not already rolled and tied, you can easily do this yourself using kitchen-grade butcher twine.
Ensuring the roll is tight helps the meat hold its shape during the long braising process, which makes for cleaner, more professional-looking slices.
The choice of aromatics like ginger and garlic is fundamental to the authentic taste of Chashu. Fresh ginger is preferred over powdered varieties for its bright, clean heat, and smashing the garlic cloves helps release more of their essential oils into the braising liquid.
If you find the liquid is too thin after cooking, you can remove the pork and simmer the sauce on the stove to reduce it to a thicker, syrup-like consistency.
- sake: Dry sherry or additional water mixed with a splash of rice vinegar.
- mirin: A mixture of white sugar and a small amount of water or white grape juice.
Equipment
- Crockpot slow cooker
- Butcher twine
- Chef knife
- Cutting board
- Kitchen tongs
Up next · Part 2 of 3
3 steps · 7 h of cooking · what to look for at each stage
Step-by-step instructions (Part 2)