Australia's homegrown superstar Curtis Stone visits the MasterChef kitchen to mentor and motivate two teams facing off in a massive Service Challenge to create next level root vegetable dishes.

It's a golden opportunity to relish in Curtis' Condiment Cook-off. Today's tastiest condiment wins its maker Immunity, plus their creation will be on Coles supermarket shelves Australia-wide tomorrow!

Immunity is up for grabs today. The contestants have one hour to recreate a Curtis Stone dish. But with a twist: they'll have to do it without the recipe!

Aussie legend Curtis Stone returns for a slow cooked lamb raviolo cook-along.