Green peppercorns are gentler than black peppercorns, which tend to give a spicy edge to peppercorn sauce. If you want a creamer pepper sauce with your steak this is a great recipe to try.
Make a fillet steak that's already special even more special with Mary Berry's classic peppercorn sauce ... cook two fillet steaks and halve the sauce recipe for a special dinner for two.
Return beef to skillet and add sauce; season with salt and pepper, if needed. Cook, stirring, until sauce is glossy, about 2 minutes more. Divide rice among plates. Spoon steak mixture over.