Blend ingredients A with some water and sautee in a non stick frying pan until you can smell the flavor.
Add beef and cook until the beef is no longer red.
Add ingredients B and cook until beef is soft. Keep adding water if it's dry.
While waiting for beef to cook, start removing the blended ingredients A and cooked Sambal Oelek (we only want the right amount of spiciness) from the sauce using a sifter (I found this inside IKEA). Only remove the amount needed, depending on your taste.
Add ingredients C and keep stirring until the sauce thickens as you like.
Garnish with sliced kaffir lime leaves or lime leaves. I mixed the leaves all over and leave it to cool before serving. It can be heated up again either using microwave or on a pan (make sure to add water in case it's too dry).