You can add lactic acid after primary fermentation to make your beer taste sour. If you are looking to make a more traditional ‘sour beer‘ then the role of Lactobacillus…
Yeast energizer is a blend of diammonium phosphate, yeast hulls, magnesium sulphate, and vitamin B complex. Used to stimulate or restart a fermentation. Add 1/4 – 1/2 teaspoon…