It was in its use of pre-recorded and live sound effects that "The Goon Show" broke the most new ground. Part of the problem was that "not even Milligan knew how to capture electronically the peculiar sounds that came alive in his head – he just knew when it had not yet happened".:205 An example of this comes from an often cited story of Milligan filling his two socks with custard in the Camden Theatre canteen, in an attempt to achieve a squelching effect. Milligan asked the BBC canteen ladies to make some custard; they thought he must have some stomach trouble so lovingly made him a fresh custard – which he accepted with thanks and immediately poured into his sock, much to their horror. Secombe recalled "Back in the studio, Spike had already placed a sheet of three-ply near a microphone." One after the other, he swung them around his head against the wood, but failed to produce the sound effect he was seeking ("So, a sock full of custard and no sound effect!").:205 Secombe noted that "Spike used to drive the studio managers mad with his insistence on getting the sound effects he wanted. In the beginning, when the programme was recorded on disc, it was extremely difficult to achieve the right sound effect. There were, I think, four turntables on the go simultaneously, with different sounds being played on each – chickens clucking, Big Ben striking, donkeys braying, massive explosions, ships' sirens – all happening at once. It was only when tape came into use that Spike felt really happy with the effects." An FX instruction in one script read "Sound effect of two lions walking away, bumping against each other. If you can't get two lions, two hippos will do". Over time, the sound engineers became increasingly adept at translating the script into desired sounds, assisted from the late 1950s onwards by specialists in the BBC's newly formed Radiophonic Workshop.:205