"The chicken is braised in the oven, but you can make it in a slow cooker or completely ... Garnish the chicken tacos with scallions and chopped cilantro. Serve hot.

We tried the most popular tacos—be it beef or chicken—from eight fast-food chains to find the absolute best version.

The chain's zesty new spin on this classic fast-food chicken item hit menus this week after much anticipation.