Read the passage and answer the questions that follow.
Striking the largest-ever deal by one airline took months of secret talks carried out a stone's throw from Britain's Buckingham Palace and culminating in a celebration over coastal Indian curries, according to people involved in the talks. Air India's record aircraft deal has put the Tata Group-owned airline in the league of aspiring global carriers. On Tuesday, it provisionally agreed to acquire almost 500 jets from Airbus and Boeing to take on domestic and international rivals. The deal was in the making for over a year, insiders said. Serious talks began last summer and continued until days before Christmas when outlines were agreed. As the astonishing scale of the deal began to crystallize, Reuters reported in December the parties were nearing a record 500-plane agreement. The epicentre of deal making was St James' Court - a luxury Victorian hotel near Buckingham Palace in London's West End. In the hothouse atmosphere of a classic aircraft industry negotiating ritual known as a ‘bakeoff’, negotiators from the airline, plane-makers, and engine giants camped out at the Tata-owned hotel and neighbouring suites for days at a stretch. They were chasing a bigger slice of a fast-growing market that has seen many airline growth plans rise and fall.
Name the negotiating ritual of the aircraft industry.