I like the taste/texture of rocket when baked through for 5 mins. If you favour the wilted leaf approach, add the rocket 2 minutes from the end.
"oo" grade flour uses the purest, whitest and central part of the wheat. The end result is silky in texture, and much whiter in contrast - and blends more easily with liquids and fats (such as olive oil in this recipe) compared with alternatives. If you are unable to find "00" grade, a strong white will be an ideal substitution.