Using a sharp knife, cut open each shrimp lenghtwise, to make a "butterfly" like shape with eahc one. Remove the black string inside the shrinp if desired. Leave the shells on. It is best for the shrimp to be frozen, since it's easier to cut them open this way. Once you cut them open, place each one in a tray or bowl open like that.
In a small bowl mix together the hot sauce, oyster sauce, seasoning sauce, and worcestershire sauce using a spoon.
Using a kitchen brush or using your own fingers, brush each shrimp, making sure to coat them entirely, so they can absorb the mixture. Place them in a tray or tupperware and cover them with kitchen plastic wrap or a lid to them let them sit in the fridge for at least 3 hours, preferably overnight.
To cook them, take the shrimp out of the fridge. Place a big saucepan on the stove over medium heat and pour some vegetable oil for cooking. Cut the garlic into small pieces and put it in the pan to cook.
When the garlic turns slightly golden brown remove it, leaving the oil there. Add some butter and cook each shrimp with the shell facing up and them turn them once to cook on the other side.
Take off the heat and serve while still hot.
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