I was looking to introduce Mango into a 5 gallon batch of stout. I figure I'd need 4oz of pure extract. I found a web site on-line (not a HBS) that sold Mango extract:
It contains propelyn glycol. Would that damage my batch? Think I should go with a mango puree instead? Any advice? I was going to just add at time of bottling/kegging with an extract similar to what I have done with Raspberry Wheats and Watermelon Ales in the past.
"Ingredients: natural mango extract with propelyn glycol."