What is the secondary tortilla used in a beefy 5-layer burrito?

In a beefy 5-layer burrito, the secondary tortilla is indeed the 6.5" tortilla. This particular size is specifically chosen to complement the primary tortilla used in the burrito, providing an additional layer that enhances the structural integrity and overall texture of the burrito while allowing for a satisfying filling-to-tortilla ratio.

The 5-layer burrito typically contains beef, beans, cheese, and a flavorful sauce, all of which are wrapped and contained effectively by the combination of both the main and secondary tortillas. Using the 6.5" tortilla helps ensure that customers experience a hearty and enjoyable meal without the ingredients spilling out.

Alternatives like the 5", 8", or 10.25" tortillas would not create the same balance in this specific recipe, as they either would be too small to contain the filling adequately or too large, which could impact the intended experience of the burrito.