There are concerns over global coffee supplies as Vietnam’s biggest city remains in lockdown. The south-east Asian country is a major producer of robusta – the bitter tasting bean used in instant coffee and some espresso blends. The exporting hub of Ho Chi Minh City has been kept under tough travel restrictions after a surge in cases of the Delta variant of Covid, adding to the difficulties for suppliers. Bean prices have already risen by about 50% this year and exporters are facing a shortage of shipping containers and soaring freight costs. Read more here.