One simply used a different spark generator. The second injected steam onto the sparks.
All you need is a means of assembling these into proteins.
Yup..."all you need" is some form of intelligence behind the experiment to make it happen. We realized this a long time ago. Thanks anyway.
The experiment replicated an environment known to have existed once steam was added. Presumably, you believe that God created that environment. If you disagree with His work, complain to Him.