All-you-can-eat, Michelin-level Italian

Boasting a Michelin-trained chef, Covent Garden's Tempo declares itself the capital's "first authentic Aperitivo Bar", drawing on the absolutely insane, economy-wrecking Italian tradition of a huge central table filled & re-filled with buffet-style chow, all free, as long as you buy a glass of wine. They do similar all-you-can-eat breakfasts too, w/ coffee made in the "traditional Italian style", using a pot known as a Moka.