Overview:Three of Grocery Games' biggest winners are taking each other on to earn the right to battle an Iron Chef. First they must flip the ingredients in the camping classic, s'mores, into a high-end dinner. Then, the two survivors must make an elevated lunch using only one ingredient per aisle. The last GGG chef standing goes head-to-head against Iron Chef Alex Guarnaschelli in a battle featuring three secret ingredients! With $10,000 on the line, the question is: Whose cuisine will reign supreme?