Gas turbine starting method using gas and liquid fuels

A method for starting a burner device for a gas turbine, wherein the burner device comprises a plurality of burner members (5) arranged to be supplied with a liquid fuel, and at least one ignition member (9), which is activated for igniting a fuel which is supplied to the burner members (5), wherein the fuel which initially during the start of the burner device is supplied to the burner members (5) and which is ignited by means of the ignition member (9) and generates burner member flames mainly comprises and ignition gas, wherein the activation of the ignition member (9) comprises the ignition of a separate ignition flame intended to ignite said ignition gas for generating burner member flames, wherein the ignition member (9) is deactivated by extinguishing the ignition flame when all burner members (5) have a burner member flame generated by said ignition gas, whereafter the burner member flame generated by said ignition gas is extinguished at at least one of said plurality of burner members (5), whereafter a liquid fuel is supplied to the burner members (5) which have not been extinguished, wherein an initial acceleration of the gas turbine takes place, whereafter a shut off of the supply of ignition gas to said burner members (5) is carried out, whereafter liquid fuel is supplied also to the burner members (5) which previously have been kept shut off.