It’s all about escapism and boisterous group dining – hopefully with someone else picking up the hefty bill afterwards The Big Mamma group’s gargantuan, flamboyant, frothily decorated pleasure palaces, which have grown rapidly across London – from Gloria in Shoreditch to Circolo Popolare in Fitzrovia and from Avo Mario in Covent Garden to Jacuzzi in Marylebone, among others – not to mention across Europe in general, tend to cause earnest food sorts to sigh wearily. If the lofty scofferati could have found a way to scupper Big Mamma’s growth, they probably would have, because these restaurants are unashamedly focused on big, sexy, silly and Italian-inspired fun. The dining rooms are styled with the chaotic yet elegant detail of a big-budget movie set; no two are remotely the same, but each branch is connected by dependably over-the-top Italian serving staff, usually male and every one of them determined to be your best friend all the way from the antipasti to the dolci, even if your stiff British mentality fights their displays of chumminess.The latest Big Mamma opening, Barbarella in Canary Wharf, east London, is no different, and features all of those elements with which we’ve become so familiar: the tall, wobbly lemon meringue pie, the camp banquettes, the huge flappy menu with 100-plus items all written in Italian and in a teensy-tiny red font. A