- Mix all the sauces ingredients well and leave aside.
- Cut the Crabs into convenient pieces, rinse and drain. Use kitchen towel to pat dry, add in cornstarch and mix well.Then heat up the oil up to 180 degrees. Deep fry the crab for about 2 mins until golden brown. Remove and keep aside.
- Leave 2 tbsp oil in a preheated wok, add in Marmite sauce mixture, bring to a boil. Cook until the rock sugar is dissolved and slightly thicken, then place in the pre-fried crabs pieces and toss until all are well coated with the sauce or until almost dry.
- Dish up and serve hot.