J&J Mex-Taqueria first opened in DC about a decade ago. The restaurant has since opened additional locations and is currently in a soft opening phase at Commas Food Hall in Ellsworth Place Mall (8661 Colesville Rd. Silver Spring, MD). While J&J operated at nearby Solaire Social (that stall is now known as Ay Mamma), diners shared that the J&J Supreme burrito is the “best burrito in Maryland and DC”– a distinction that was echoed by fellow stall operators at Solaire.