Traditionally slow-cooked for hours, this dry-style curry transforms humble cuts of beef into something unforgettable, with bold spices, creamy coconut milk, and layers of flavour that deepen over time.
In this version, we’re using a Billyboil Thermal Cooker to make things easier without sacrificing authenticity. A thermal cooker is like a modern-day magic pot — it uses retained heat to cook your meal slowly, without needing electricity or gas once the cooking begins. After an initial simmer on the stove, you simply place the pot into its insulated outer container, seal it up, and let time do the work. It’s perfect for boat life, camping, or just saving energy at home.
The result? Fall-apart beef and deep, traditional rendang flavour — with hardly any effort.
The Billyboil Thermal Cooker uses zero energy after a quick heat-up on your stovetop. It cooks your meal using retained heat, keeping it hot and gently simmering for up to 12 hours — no electricity or gas needed.
It’s perfect for everyday use or when you’re on the move. Here’s why people love it:
Time-saving: Prep your meal, bring it to a boil, then walk away — no need to watch the stove.
Energy-efficient: Uses up to 80% less energy than traditional cooking methods.
Naturally insulated: Keeps food cooking between 60°C and 100°C for hours thanks to its vacuum-sealed design.
Travel-friendly: Safe, simple, and portable with a secure, lockable lid and carry handle — ideal for boats, campers, or busy days.
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