This recipe comes from the Qantas inflight magazine, November 2008 edition, and unfortunately the tear sheet doesn’t show whom it should be attributed to.
Beef fillet was used in the original but Monsieur D substituted mushrooms (white and/or brown, Swiss: whatever was available) and it soon became a signature dish in Chez Wayville.
Being a stir-fry, I don’t think the quantities of ingredients such as oyster and soy, kecap manis (Indonesian syrupy soy) matter – it’s about personal taste. Start with less, you can always add more but you can’t take away.
As the original recipe also says, this dish relies on the freshness of the peppercorns, so buy them in small amounts regularly and crush them. This goes well with or without rice and a side dish of steamed greens. Serves 2