Mac Mart will be at 104 S. 18th St., next to the new Cleavers cheesesteak shop and across the street from the Di Bruno Bros. Rittenhouse store. (Talk about a Gouda destination for cheese aficionados.)
Working with her sister Pamela and her boyfriend Garrett Jablonski, Lieberman, 26, has Mac Mart set up in the same vein as today's other fast-casual eateries: bright interior design, cafeteria-style ordering.
You start with a base - the original seven-cheese mac topped with potato chip panko crunch - and customize from there.
Prices will be $8.25 to $10.50, and - Lieberman points out - the bowls include a pound of mac and cheese before the toppings are added.
Mac Mart's "classic" bowls include spinach and artichoke, a "Fat-n-Happy" (topped with bacon, fried onions & Pam Pam's buttermilk ranch), a "BBQ in a Bowl" (with barbecue chicken chunks, cornbread crunch and a BBQ drizzle), 'a Wit' Mac (topped with Philly steak, caramelized onions, potato chip panko crunch, and a ketchup drizzle), and a "Heart Attack," which comes with caramelized onions, bacon, potato chip panko crunch, and, presumably, a stent.
There are vegetarian and gluten-free options, as well as a few sandwiches, including grilled mac and cheese (see below; props on the gel manicure).
It should be noted that Lieberman is probably a size 2.
Seasonally, she will offer a Crabby Mac (topped with creamy cheese and jumbo lump crabmeat dip, and Old Bay potato chip panko crunch).
It will be mainly takeout; seven seats will be set up at the counter.
Initial hours will be 10:30 a.m. to 9 p.m. Monday to Friday, till 10 p.m. Saturday, and 11 a.m. to 7 p.m. Sunday. Later hours are expected.