Single-infusion mash at 151° F (66° C) for 45 minutes. Draw 6 gallons and boil 60 minutes. Chill to 68° F (20° C) if possible. Whirlpool and allow 15 minutes to settle before racking to fermenter. After primary fermentation, rack onto pureed mangos. (Mangos change flavor as they age so it’s important to get them from the same tree or source whenever possible. Overripe mangos make for a somewhat putrid final product. Their sweetness also varies depending on the exact type of mango-some are sweeter than others.) In seperate muslin bag, add hibiscus and a couple of sanitized marbles for weight. Suspend bag from a string so it can be easily removed after three days (or longer if a spicier beer is desired). Ferment in secondary for three weeks.