Making oyster sauce at home is very easy. Here are the flowing ingredients you will need to prepare oyster sauce. You will need around three dozens of fresh oysters, melted butter and milk. Open the oysters and carefully place the liquor into a saucepan. Let them boil for a few minutes. When they get a little plump, immediately turn the fire off and strain the liquor. Mix the liquor with milk and butter. You can also set it on fire again to settle the sauce. Adding cream to the liquor will make the sauce very delicious. And there you have it, a freshly cooked oyster sauce.