First there was the extensive field research into existing beers of that style to see what sort of taste I'm after.
Then I used my detailed knowledge and extensive training on the materials used in making beer to have a brain storming session on which ingredients to use :
Next I reviewed the brewing literature:
Then I performed a series of complex calculations regarding the strength, bitterness and colour:
After that it was time to give it a go. And there you have it: