Bring the oil up to 350 degrees Fahrenheit (~170 Celsius) on medium-high heat.
Then fry the pork cutlet until both sides are golden brown, turning them over a few times with tongs. It will take roughly 10 minutes.
Cut them into strips and enjoy!
Homemade Donkatsu Sauce (Optional)
Pour water, Worcestershire sauce, ketchup in a large bowl and mix them together.
Then put a frying pan on low heat. Place butter and flour into the frying pan. Mix the two together throughly in the pan to make a simple rue.
Then pour the mixture from the bowl into the frying pan. Stir constantly until the mixture starts to boil.
Let the mixture boil for 2 minutes - remember to keep stirring.
Put a pinch of black pepper and sauce is ready. Pour on top of the donkatsu.