An inquest into the death of a teenager who died after suffering an allergic reaction having eaten at a Byron restaurant will resume this week.
Owen Carey had allergies including dairy and suffered a fatal reaction after eating a chicken burger at Byron in North Greenwich, London in April 2017.
His family want to establish whether the chicken contained buttermilk, which was not listed on the menu.
His mother, Moira, told The Times: "We know that we will never be truly happy again as one so very loved has been taken from us."
Byron chief Simon Wilkinson said: "Byron would like to extend our deepest condolences to Owen's family. We always take food allergies extremely seriously. and have a comprehensive set of measures in place."
The inquest into Owen Carey's death will continue at Southwark coroner's court this week.