X4 Catharina Sour: Mango Mango Mango

BJCP 2018 "A light and refreshing wheat ale with a clean lactic sourness that is balanced by a fresh fruit addition. The low bitterness, light body, moderate alcohol content, and moderately high carbonation allow the flavor and aroma of the fruit to be the primary focus of the beer. The fruit is often, but not always, tropical in nature."

A heavily fruited low abv sour beer, you can produce the sour base for this beer through kettle souring (details: https://www.wikihow.com/Kettle-Sour-Beer) or through co-fermentation of yeast and lactobaccillus bacteria (recommended).

The latter method is very simple and entails using no hops in the kettle (as Lactobaccillus will not sour the beer if hops are present). In this method you pitch your yeast and allow your beer to fully ferment out. Once complete raise the temperature to around 30C and add your souring culture (Laboratory cultures of Lactobacillus are best though you can also use greek yoghurt or probiotic pills). Once souring is complete taste the sour beer. If there are no significant off flavours then you are ready to proceed in adding your fruit. Puree is the easiest and most sterile (so it does not introduce new yeast/bacteria). Allow refermentation of the fruit to occur for another 7 days until the gravity is stable.

Most fruit can be used though be aware some will provide additional acidity (examples include passionfruit). Check http://www.milkthefunk.com/wiki/Soured_Fruit_Beer#Usage_Suggestions for usage suggestions.