The Top 12 home cooks face their first mystery box challenge, which includes a treasured and meaningful kitchen item to provide them with inspiration.

The Top 10 are blindfolded and must work in pairs to replicate a seven-layer birthday cake in honor of Canada's upcoming 150th birthday. With a different flavor for each layer, the duos must decipher each taste without the use of sight before they recreate the cake. Then, Season 3 winner Mary Berg reveals the next elimination challenge.