Pastoral makes a mean sandwich. Fresh-shaved serrano ham, Basque salami and other carnivorous fixings meet smoky mozzarella, Gruyère and piquant spreads on crusty baguettes. Vegetarians also have options. There's limited seating; most folks take away for picnics in Millennium Park (call in your order a few hours in advance to avoid a queue). The shop sells bottles of beer and wine, too.
Pastoral has another branch in the Loop's French Market, plus others in Lakeview and Andersonville.