Downtown 42 p o r t l a n d monthly magazine range from $13 to $18 while a spiked shake will set you back $11. Across Monument Square, sandwiched between Guitar Grave and the First Par- ish Church, catering company A Move- able Feast has opened a restaurant branch, Vieux Port Creole. Co-partner Susanne Cornelia says the fare is unique in Port- land. “The Cajuns came through Maine on their way to Louisiana, and this is the kind of hearty food they ate,” she says. Cornelia’s grasp of Acadian history may be fractured, but the gumbo and jambalaya are tasty and surprisingly inexpensive: only $4.25 for a cup and a bread roll. “It’s affordable because we buy simple ingredients and don’t pour anything out of a bag,” Cornelia says. Her restaurant opened on Mardi Gras, but Cornelia and partner Kevin Guay are still putting the finishing touches on the place. The intimate dining area, checkered floor, paintings, and even the makeshift counter all make it in- viting and unpretentious. When Corne- lia isn’t bustling around greeting and chat- ting with customers, she’s working on her laptop out in the dining room. As custom- ers pay their bills, they leave with stacks of lunch menus. “I hand them out like candy,” she says. Chain Reaction I n the rough square mile contained by In- dia, High, Congress, and Commercial Streets lies the salty, beating heart of Port- land’s commerce. And despite the Old Port’s nostalgic name, retail spaces in the area seem to ride a carousel of new ownership. This summer, Williams Sonoma-owned furniture chain West Elm will move on- to the corner of Middle and Market Street, formerly home to White Cap Grille and before that Sebago Brew Pub. Before that, the Oyster Club. Before that, Market Street Market, developed by Pritam Singh. It’s