Steps 1-17 is for how to process a live crab
Soak crab in enough water to cover its beak and add 1 tbsp of salt for 30 minutes. Salt water will help the crab spit out any unwanted residue (sand and other impurities)
Rinse with water and scrub the shell with a brush
Flip the crab on its top shell
Use a sharp pointy knife and insert above the abdominal flap without going through the top shell (or carapace) I believe that this is the most humane way of killing the crab
Make sure that the crab is no longer moving then pull down the abdominal flap (aka apron) and remove
Remove the top shell by prying it open with your fingers from the back (opposite side from the eyes)
Use kitchen shears to remove the beak area
Use kitchen shears to remove the gills
Use kitchen shears to cut off some of the hairs on the rim of the top shell
Cut off the tip of each leg
Flip the crab over and cut from the abdomen to the posterior of the crab. Make another cut to the anterior so that the crab is now cut in half
Remove the leg with the claws and cut off the claw
Cover these pieces in a damp cloth and hit it with the side of a cleaver or a rubber mallet to break the shell these are the parts with the hardest shell
Take one half side of the crab, place it on your cutting board so that the legs are up. Make a cut so that 2 legs are together. Repeat for the other half
Use a large bowl of water to clean the top shell. Gently fill it with water and pour it out making sure that the crab “mustard” aka hepatopancreas aka crab brains (in female crabs, there are roe as well) doesn’t come out
Rinse all the other parts in running water and then let dry in the colander or pat dry with kitchen towels
Take approximately 3 tbsp of corn starch and lightly coat all the pieces of crab
Heat 1.5L oil in a wok or pot
Prepare chopped chilis, green onions
Add Thai basil leaves to the oil when the oil is at approx. 120˚C or 250˚F
Remove Thai basil from oil when it has crisped up When you lift it up from the oil, it can keep its shape. As it cools, it will further harden
When the oil gets to 175,C or 350˚F, add the crab to the oil
Cook for approx. 3 minutes or until it turns to a golden color and remove from oil
In another wok, add 3 tbsp oil, chopped salted egg yolk, ½ tsp sugar and salted egg yolk paste. Stir-fry until foamy. Cook on medium-high heat
Add chilis and fried garlic, mix well
Add green onions, mix well
Add crab, mix well
Taste test. Add salt and/or some fish sauce if you need it saltier Sometimes the salted egg yolk paste is quite salty already, depends on the brand
Add deep-fried Thai basil and toss in the wok one last time
Plate and serve