Authentic Japanese Ramen Chashu (Braised Pork Belly)
Master the ultimate ramen topping with this authentic chashu recipe. Rolled pork belly is seared, then slowly braised in a savory sake and soy glaze.
Chashu is the crowning jewel of a traditional bowl of Japanese ramen. Unlike its Chinese roasted namesake, char siu, Japanese chashu is rolled and slowly braised until melt-in-your-mouth tender. The secret lies in a low-temperature simmer in a rich bath of soy sauce, sake, and bonito, which slowly transforms the tough pork belly into a gelatinous, savory delicacy with a beautifully caramelized exterior.
Ingredients
- 1 kg pork belly block (skinless, balanced fat-to-lean ratio)
- 200 ml clear sake
- 100 ml dark soy sauce
- 50 g sugar
- 10 g dried bonito flakes
Instructions
- 1Prepare the pork belly
Begin with a premium cut of pork belly that has a balanced ratio of alternating fat and lean meat. Use a sharp knife to carefully slice into the meat; this step involves removing the tough outer skin to ensure the final chashu has a perfectly tender texture.
Tip: Look for a piece of pork belly with even layers of fat and lean meat to ensure the best texture and moisture. - 2Portion into large blocks
After the skin has been completely removed, lay the large slab of pork belly flat. Cut it straight down the middle to divide the meat into large, uniform rectangular blocks. These wide strips will be the perfect size for rolling.
Tip: Make sure your cuts are clean and straight so the meat rolls evenly in the next step. - 3Tie the pork roll tightly
Roll one of the pork belly blocks up as tightly as possible into a firm cylinder. Using white butchers twine, secure the meat by tying it tightly, wrapping the string around at a 45-degree angle. This crucial step holds the meat together as the collagen breaks down during braising.
Tip: Tie the string tightly enough to compress the meat, which helps maintain a perfect round shape for beautiful, even slices later. - 4Sear in a dry pan
Place a frying pan over heat and allow it to get hot without adding any cooking oil. Place the tied pork roll directly into the pan. The natural fat from the pork belly will quickly render out to grease the pan as the meat begins to sizzle.
Tip: Start searing with the fattiest side down to render enough fat to coat the pan for the rest of the searing process. - 5Achieve a deep caramelization
Continuously rotate the pork roll using tongs until all sides develop a deep, caramelized brown crust. This beautiful browning is the Maillard reaction at work, which is essential for building a rich, savory depth of flavor that will infuse the entire dish.
Tip: Dont rush this step; achieving a dark, even sear locks in flavor and provides a beautiful color to the finished chashu. - 6Start the braising liquid
Begin assembling your chashu sauce in a deep metal pot. Start by pouring in a generous amount of clear sake. The natural enzymes present in the sake are a key ingredient, as they actively help to soften and tenderize the pork belly during its long simmer.
Tip: Use a good quality cooking sake, as it forms the foundational flavor profile of your braising liquid. - 7Add bonito flakes
Sprinkle the dry bonito flakes into the pot with the simmering sake base. The bonito flakes infuse the chashu sauce with a deep, smoky umami flavor that provides an authentic Japanese taste profile.
Tip: High-quality dried bonito flakes will yield the best flavor extraction for your sauce base. - 8Add dark soy sauce
Squeeze dark soy sauce into the pot to build the foundational salty and sweet profile of the marinade. The dark soy sauce not only adds richness but also imparts a signature deep caramel color to the pork.
Tip: Dark soy sauce is primarily used for its rich color and mild sweetness; balance it with regular soy sauce to adjust the overall saltiness. - 9Stir and caramelize the sauce
Add sugar to the pot and gently whisk the simmering mixture. Heat the sauce until it reaches approximately 120 degrees Celsius, allowing the sugars to caramelize and bind the sake, bonito, and dark soy sauce into a rich deep brown glaze.
Tip: Watch the pot closely as the mixture bubbles and thickens to prevent the sugars from burning to the bottom. - 10Submerge the pork roll
Carefully lower the tied and seared pork belly roll into the hot, caramelized chashu sauce. Ensure the meat is well-coated so it absorbs the flavors evenly during the long cooking process.
Tip: If the sauce does not fully cover the pork, you can add a splash of water or rotate the meat periodically while it simmers. - 11Simmer the pork belly
Maintain a low temperature and let the pork belly simmer continuously for 90 minutes. This slow cooking technique breaks down tough fascia and allows the collagen to convert into gelatin, resulting in incredibly tender meat.
Tip: Avoid a rapid boil. High heat will cause the meat fibers to seize up, making the pork tough rather than tender. - 12Remove the twine
Once the chashu is fully cooked and slightly cooled to hold its shape, carefully snip and pull the butchers twine off the meat. The pork will feature a beautiful, dark glaze from the caramelized soy and sugar reduction.
Tip: Chill the meat completely in the refrigerator before slicing. A cold chashu roll is much easier to slice thinly and cleanly without crumbling. - 13Slice the chashu
Once the meat has been thoroughly chilled, place it on a clean cutting board. Use a sharp knife and a smooth sawing motion to cut the cold chashu into thin and even rounds, taking care not to crush the tender layers.
Tip: Use a gentle back and forth sawing motion when slicing, rather than pressing down hard, to maintain the structural integrity of the soft meat.
