Subway: Red to Chicago; Red to Grand(312) 587-8910 portillos.com/portillos41.893661 -87.631574 100 W Ontario St (between Clark and LaSalle Sts) River North, Chicago
Lunch, DinnerAverage main course: $5
This über-efficient local chain, begun in Villa Park in 1963, is mostly found in the suburbs. But at the one city Portillo's, in tourist-heavy River North, out-of-towners flock in search of an authentic Chicago dog. The thick, nicely juicy dog comes on poppyseed bun steamed to perfect softness and with a generous helping of thick-cut tomatoes, onions and a hefty pickle slice.