Par boil beef bones in plenty of water to boil for 10 minutes before transferring into a bowl of cold water. Rinse the bones. Make a stock pot using 3.75 4 quarts of water to an unbeatable simmer. Add the bones along alongside 1 teaspoon of salt, and two slices of ginger (about 2 inches long).Let the mixture get to a point of boiling and remove any foams. Then reduce to an ice-cold simmer. Cover with the lid and cook gently over 6 to 8 hours.
While the bones are simmering while cooking, use kitchen twine to tie up the shank and beef brisket. Boil the meat under boiling for about two minutes. Rinse them and add them into the stock pot. Set the heat to an even simmer. Skim off any foams. Cover the lid by securing it.
Cook the beef shank and brisket until the meat is tender enough to suit your taste. Brisket of beef can require 2.5-3 hours, while shanks of beef can require 1-1.5 hours. Once they're cooked take them out of the broth and place them in the bowl of iced water. When they are cool, you can refrigerate them in the event that the broth isn't finished at this point.
About 2.5 hours prior to completing cooking the broth, cook onions ginger, shallots, and garlic (all with skin on) on the grill pan or on the stove. It could take between 10 and 15 minutes, and you'll see burned marks on the skin of the onions. The onions will be more tender and soft with juices bubbling. Remove the skin and charcoal-colored part of the onions as well as ginger and shallots.
In a pan over medium-low to medium heat, cook the spices for a couple of minutes until they are fragrant. Be cautious not to burn the spices (especially those with cloves). Include them in an herb bag.
Remove any excess fat from the broth (note that you should leave some of the fat). Put the spice bag onions, ginger, and shallot into the stock pot , and cook the broth for around 2 hours prior to serving. then take them out.
Before serving, spice the broth with salt (I usually add an additional teaspoon salt) as well as rock sugar and fish sauce according to your preference. Also , check how much water has evaporated and add liquid to your broth, if required. Each bowl requires 1 1/2-2 cup (360-480ml) in broth based on the size (medium and large).