Buffalo burgers, turkey burgers with sweet-potato purée, Maryland crab-boil burgers -- Mirepoix offers them all. The kitchen makes no claims of authenticity or traditionalism, but instead takes the idea of the classic American burger and turns it back on itself, giving it a real regional flair. By using the best ingredients in an array of inspired fixings, mounting everything on great breads and turning all the skills of a fine dining crew toward the creation of the best burgers possible, Mirepoix successfully challenges the notion that any new take on an old American classic has to be fussy or fancy. In truth, all it has to be is good, and Mirepoix goes one step further by making its burgers great.