The invention relates to a method for producing a high-pressure fuel reservoir for a common rail fuel injection system of an internal combustion engine, having a hollow base body (1) which is equipped with a plurality of connection openings (3). In a simple method that can be performed inexpensively, a connection bore (4) is predrilled. The communication between the connection bore (4) and the interior (2) of the base body (1) is created with the aid of a further machining method.