Nostos invented the freeze-distilled flat white. Order the Diego: pistachio and cardamom, named-lot single origin, and a preparation technique that exists nowhere else in London.

The Barako heirloom espresso is the draw. A Philippine coffee varietal built into a programme that treats sourcing as a cultural position, not a marketing line.

The guest roaster changes monthly in a Battersea brunch room that doesn't need to care this much about coffee. It does anyway.

Rotating pour-overs with fruity, juicy profiles in a part of Battersea that doesn't usually deal in this kind of specificity. The beans change and the tasting notes change with them.

Doppio roasts its own blends for trade and opens the showroom to the public. Single origins on the menu with tasting notes, retail beans on the shelf, and enough commercial kit around you to make clear this is a coffee business first.

Sendero sources direct from named cooperatives rather than through a wholesale roaster. The most considered option in this part of Battersea, with retail beans if you want to extend the habit.

Sendero runs its own sourcing and roasting operation, with named single origins from Uganda and Guatemala. South London knows it for gelato; the coffee is the real draw.

Volcano Coffee Works supplies the beans here, a South London B Corp roaster whose direct-trade provenance is the real credential. Clean space, retail bags at the counter if you want to take the sourcing home.

The owner runs the bar and will rope you into trying whatever's just been added to the menu. Coffee is clearly the point here, not just something to sell alongside the pastries.

Filipino beans, hand-roasted in Battersea. The sourcing story and the espresso share the same kitchen.

A calm south London local where the sourcing runs deeper than the postcode suggests. Worth the trip to Lavender Hill to find out what Chris has on the menu.