From an email:

“Stellina Pizzeria, an Italian street food and pizza concept opening soon in Union Market District, will pop-up with its mobile pizza oven on Neal Place this Saturday and Sunday starting at 11am to offer a first taste of several menu items. Dishes for sale include margherita and bianca pizza al portafoglio (whole Neapolitan-style pizzas folded and wrapped in paper for easy on-the-go eating) and fried artichokes served in paper cones called cuoppo. 

The new restaurant from co-owners Antonio Matarazzo and chef Matteo Venini will open at 399 Morse Street NE in late 2018, and will offer a modern take on the classic pizza counter. The menu is inspired by the street food tradition and culture of the southern Italian coast.”