Like the earth, a sandwich is made of layers and gathers its strength from its meaty core, which pushes condiments toward the crust to erupt and bury fingers in deliciousness. Let rivers of mayo magma run with today's Groupon: for $5, you get $10 worth of classic lunch fare at Mia's Cafe on Martin Luther King Boulevard.

Sporting a moniker inspired by the owners' daughter, Mia's Cafe (formerly Shelly's Corner Cafe) offers tasty renditions of traditional lunch café favorites. A menu of midday dishes kicks off with portions of lush greenery such as the chicken salad, a half garden salad topped with tomatoes, cheese, croutons, and a heap of tender chicken ($6.50). Kindergarten food critics give rave reviews to the namesake Mia's PB&J ($2.34), while dual-acting parental agents tag along for an assortment of toasted options, including a freshly made chicken salad sandwich ($4.45) or a rye-flanked corn beef Reuben topped with an alliterative array of swiss, sauerkraut, and dressing ($5.50)—all offered on a variety of breads. Carb-evading diners may choose to bundle disorderly toppings of the roasted turkey and swiss, club, or chicken salad into a neatly packed wrap optimized for on-the-go eating ($5.50).