Courtney Roulston

Your favourites are back for another crack at the coveted MasterChef title. Up for grabs tonight is this season's only immunity pin and joining them all week is chef extraordinaire, Gordon Ramsay.

Today the contestants compete in the ultimate BBQ challenge, cooking for a staggering 1200 people.The team who least impresses, will find themselves cooking in tomorrow's pressure test.

MasterChef 2010 kicked off with the top 50 contestants cooking a BBQ dish of their own choosing.

Each team must cook a three-course meal for 120 guests. The judges reveal three ingredients: black garlic, ginger and potatoes. Each team must feature one of the ingredients in each course.

The contestants each cooked their signature dishes but were judged by their fellow contestants, not the judges. The women tasted the men's dishes and voted for the best three.

The first challenge was a series of kitchen prep tasks. The final task saw Marion, Daniel, Adele and Courtney cut salmon fillets of the correct weight andtheywere given their Top 24 aprons.