The remaining three chefs face their final challenge.

The chefs serve up their version of a burger for a surprise guest critic. Also: The culinarians pay tribute to teachers through food; and three contestants advance to the finale.

Tonight's quickfire challenge for the next group of four chefs comes from season four's "Seven", asking them to make a dish using color. Then they must sell upmarket street food using offal as the base ingredients.

The four remaining chefs are challenge to identify ingredients blindfolded. Afterward, the chefs will be tested on their leadership talents and teaching skills when they cater an event.

The winner of this week’s Battle of the Sous Chefs challenge, along with their Top Chef Master, get to create today’s Quickfire. Then, the chefs face a culinary body slam, as they create dishes with a Mexican flair for the wrestlers of Lucha Vavoom.

Convincing high-brow clients of pub grub's merits is tonight's seemingly impossible challenge for the chefs as they try to show that flair and flavor can be found in other than haute cuisine. Competing chefs, Graham Elliot Bowles, Jonathan Waxman, Ludo Lefebvre, Mark Peel, Rick Moonen and Wylie Dufresne are tasked to reimagine old-school pub grub.

The meal mavens prepare cuisine for a wedding.

The epic "Restaurant Wars" challenge tasks the foodies to open eateries with a Los Angeles theme. Appearing: actress Busy Philipps and culinary editor Dana Cowin.

Twelve renowned chefs battle in culinary challenges in Las Vegas in the Season 4 opener. Here, the masters play a card game to score ingredients, then they create an extravagant buffet for some of Sin City's hottest performers.

Season 5 comes to a close with the final three master chefs creating memorable dishes from their personal and professional lives, after which the winner is revealed.

The winning chef is named in the Season 4 finale. Before that, the final two culinarians battle it out by creating a dish with the help of staffers from their own restaurants back home.

The ace culinarians delve into science and technology by utilizing modern-day kitchen gadgetry to whip up breakfast. Later, they tap into old-school chemistry at a science fair to render culinary creations.

The top six chefs get a surprise as they prepare to cook their signature dishes.

Master chefs know how to work under pressure, but how well can they do fast food? This week’s Elimination Challenge puts the cheftestants to the test in a traditional Southern California eatery, the drive-through. The cheftestants will have to operate a fast food drive-through, from the grill to serving up their best meals and all in less than two minutes.

A celebration of returning soldiers.

The masters are in for a treat this week when two high-profile celebrities visit the top chef kitchen. Pop Star and trained chef, Kelis, drops by to judge a very meaty quickfire challenge and then Mad Men actress, Christina Hendricks and her husband, actor Geoffry Arend, enlist the help of the cheftestants in a special '60s-themed Elimination Challenge.

Crickets, nightcrawlers and beetles, oh my! These master chefs are used to cooking with the finest ingredients, but in this week's Quickfire they’re forced to make a delicious dish out of some horrifying creatures. The Elimination Challenge however, makes it all worthwhile when the chefs compete to sell their dishes for $100 a plate at a charity fundraiser. For every plate they sell, the money they receive goes directly to their charity of choice and these chefs are in to win it.

The tables are turned in this week’s Quickfire when the cheftestants become the judges and have to critique their fellow chefs. Then in the Elimination Challenge, the remaining contestants are in for a double dose of surprises. Pop Rock group Maroon 5 drops by and challenges the chefs to create a feast fit for a rock star, but it's not that easy. Once again the tables are turned and the chefs are taken out of kitchen and brought to a surprise location to prepare their meals.

In this week’s Quickfire challenge the Chefs must make a dynamic duo dish for a couple of dynamic musicians – The Indigo Girls. For the elimination challenge, the Chefs are tasked with making a whimsical all-you-can-eat - bottomless bloodys & mimosas brunch at an upscale sexy pool party, hosted by Ms. Vegas, Holly Madison. Bikini-clad servers will serve the chefs’ creations to Holly’s friends lounging poolside. Special guest judges include The Indigo Girls and Holly Madison.

The Masters are challenged to create a divine dish inspired by a Greek God. The blind taste test returns with the "Name That Ingredient" Quickfire, and then the chefs look to Greece and the ancient gods as inspiration for their elimination dishes.

This week, the Chefs are tasked with taking ordinary salad bar ingredients and making them “pop” for music legends, the B-52’s. Then the Chefs will take a trip to the Grand Canyon for a cookout like never before. The Chefs will be paired up to cook for the Hualapai tribe, using ingredients from the tribe’s sacred land.

In this week’s Quickfire Challenge the chefs must use each of their five senses to identify mystery ingredients -- however they can only use one of their senses at time. In the Elimination Challenge, the masters help a man propose to his unsuspecting girlfriend on her favorite show, Top Chef Masters. In a six-course meal, the chefs must create dishes that reflect different stages of the couple’s relationship, but could one bad dish ruin the whole plan?

Top Chef Masters is back with a brand new host, new judge and a new format -- so why not start the competition off with something familiar, the most notorious of all Top Chef challenges, Restaurant Wars? These master chefs have opened their share of award-winning restaurants, but nothing could have prepared them for the pressure that’s on now. With their egos on the line, the knives come out right out of the gate.

On this week’s episode, the chefs will be creating an aphrodisiac dish using known aphrodisiac ingredients. The chef whose dish really turns them on will be the winner for this challenge. Lotus of Siam is a legendary Nevada Culinary landmark that has amassed award after award. For this Elimination Challenge, our chefs will be faced with the task of creating their own Thai restaurant in the Top Chef Masters kitchen and attempting to create their own versions of classic Thai dishes. Special guest judge is Dita Von Teese.

The chefs create classic American cuisine with an Asian spin.

The chefs are challenged to turn classic junk food items into fine-dining cuisine. The cast of Flipping Out are the diners for this challenge. Then, the chefs are challenged to create a mini 3-course "meal" for 100 people, without any help whatsoever. The meal must be based on an appetizer, an entree, and a dessert.

Top Chef season two's "Less is More" influences tonight's quickfire challenge, but there won't be any Cheetos in melted chocolate bars tonight as the next four chefs are asked to create an elegant amuse-bouche from vending machine fare. Then it's on to the elimination challenge where the show Lost acts the muse.

The chefs are asked to create Quickfire dishes inspired by Simpsons characters who then judge them, and then they must turn their skills toward making offal tasty in a surf & turf presentation.