Tarragon
Tarragon is called for by exactly one recipe on Burgerman. In these builds it never shows up on its own, but pulling it out of a recipe is immediately noticeable. It is used in Turkey Burgers with Rice Krispies. The highest-scoring recipe using it is Turkey Burgers with Rice Krispies at 7.9 out of 10. It turns up most often alongside ground turkey, crispy rice cereal, zucchini.
