Question: Pumpkin Ale is created by adding pumpkin flesh to what, a vital component in the fermentation process? 
Sentence (from "Mash ingredients"): Mashing is the act of creating and extracting fermentable and non-fermentable sugars and flavor components from grain by steeping it in hot water, and then letting it rest at specific temperature ranges to activate naturally occurring enzymes in the grain that convert starches to sugars.
Relevant evidence: No