What we have here is not so humble as an osteria. Sure, it has an underlying rustic Italian brief, exemplified by the chargrilled whole octopus brutishly splayed over a sauce made of the fiery Calabrian spreadable salami, `nduja. On the other end of the spectrum, lamb tartare arrives gussied up for the red carpet with a custardy froth of smoked eggplant, purple Congo potato crisps and winks of rosemary oil.