I have found that regular 100% grape juice does not last very long before it begins the fermentation process, would de-alcholised wine be just as acceptable to use when performing the Eucharist? De-alchoholised wine does contain small traces of alcohol, although the quantity is so little that in many places this sort of beverage is labelled as non-alcoholic.

That was in relation to the wine, now on to the bread; Can we use any type of bread such as rye, white, sourdough and so on?

Is there a specific prayer that must be performed during the ritual, where should one be placing their awareness?