The Bacon-Smoked Shoyu Tonkotsu
Chapter 1 — The Broths: The Foundational Layer
If you've ever stood freezing on a Little Tokyo sidewalk at eleven at night waiting for a bowl of ramen, this is for you. True tonkotsu is an obsession of increments, a feat of mechanical engineering that demands a violent, rolling boil to forcefully emulsify pork fat and water into a thick, milky-white broth. We're abandoning culinary shortcuts here: building a brutally concentrated bacon-smoked tare, cold-slicing the belly, and timing the egg to the second. It’s a two-day project, but when you fold those alkaline noodles into the roaring hot soup, you'll know exactly why you did it.
Before you start
Soak the pork bones overnight to extract excess blood.
Place all the pork bones in a massive stockpot, cover with cold water, and leave in the fridge overnight. This begins the critical process of leeching out impurities.
Bake the baking soda to create your alkaline kansui substitute.
Spread a quarter cup of baking soda on a foil-lined sheet and bake at 350°F for exactly one hour. Use 5g of this powder with 500g bread flour, 190g water, and 5g salt to craft noodles with the proper bite and snap.
Ingredients
- pork split trotters4 lb
- pork neck bones4 lb
- pork femurs2 lb
- skinless pork belly block2 lb
- brown onion1 large
- garlic1 large
- ginger2 med
- bacon1 lb
- kombu1 med
- premium Japanese soy sauce2 1/2 cup
- mirin1 cup
- sake3/4 cup
- sugar1/2 cup
- brown sugar1 tbsp
- scallions8 med
- eggs6 large
- baking soda1/4 cup
- bread flour500 g
- water190 g
- salt5 g
- wood-ear mushrooms1/4 cup
- nori1 med
Method
- 01
Blanch and aggressively scrub the bones to purge all impurities.
Discard the overnight soaking water, cover the bones with fresh cold water by 2 inches, and boil aggressively for 20 minutes. Dump the terrifying amount of gray scum into the sink, then individually scrub every bone under cold running water to remove coagulated blood lines and black marrow.
- 02
Braise the rolled pork belly and chill it overnight before slicing.
Sear the tied pork belly until golden in a Dutch oven, then add 1 cup of soy sauce, 1 cup of water, 1/2 cup of mirin, 1/2 cup of sake, 1/2 cup of sugar, whole scallions, and a knob of ginger. Simmer covered on low for 3 hours, then cool completely and refrigerate in the liquid overnight; never slice it warm or it will shred.
- 03
Initiate a violent, rolling boil for the tonkotsu broth.
Return the meticulously scrubbed bones to a clean stockpot, cover with water by 3 inches, and add the halved onion, garlic, and remaining ginger. Bring to a violent, rolling boil on the highest possible heat.
- 04
Maintain the hellish agitation for twelve hours to emulsify the fat.
Do not drop the heat to a simmer; the water must crash and churn continuously to mechanically tear the fat from the bones and suspend it in the liquid. Top off with boiling water from a kettle every hour to keep the bones submerged, then strain the milky, opaque broth and refrigerate.
- 05
Boil the eggs for exactly six minutes and thirty seconds.
Pierce the wide ends of the cold eggs with a pin, boil them rapidly, and instantly plunge them into an ice water bath for 10 minutes. Peel and submerge them in one cup of the leftover cold chashu braising liquid for exactly 12 hours.
- 06
Render the bacon to extract the aroma oil and build the smoked tare.
Slowly render the bacon lardons until completely crisp, then strain and reserve the liquid bacon fat as your aroma oil. In the same skillet with the browned fond, steep the kombu in a cup of water for 10 minutes, remove it, then add 1 1/2 cups soy sauce, 1/2 cup mirin, 1/4 cup sake, and the brown sugar, simmering briefly into a concentrated syrup.
- 07
Construct the bowl with unseasoned broth, tare, and alkaline noodles.
Add 2 to 3 tablespoons of the tare and a tablespoon of smoky bacon oil to a warm bowl, then pour in 1 1/2 cups of screaming hot, unseasoned tonkotsu broth. Fold in the briefly boiled alkaline noodles, then drape with cold chashu slices, the halved bullseye egg, sliced scallions, wood-ear mushrooms, and nori.
Notes
The broth remains entirely unseasoned.
Resist the urge to salt the simmering cauldron. Authentic ramen grammar dictates that all salinity and umami live in the tare at the bottom of the bowl.
Clarity is a flaw.
You are not making a delicate French consommé. The violent boiling action is necessary to shatter the pork fat into microscopic droplets, creating the signature opaque, lip-sticking emulsion.
Respect the temperature of the chashu.
If you attempt to slice the braised pork belly while it is still warm, it will shred into unappealing chunks. Chill it overnight to solidify the fat, slice it cold, and let the ambient heat of the broth melt it in the bowl.