A 100g tub of Citric Acid by Almost Off Grid. Citric Acid can be added to juice, wine or cider as required to achieve the acidity you need. It is widely used in the production of elderflower wines and cordials in the summertime. It gives a healthy fermentation in homebrewing and also has good antiseptic properties. And it gives a pleasant acid character to homemade wine. This item contains 100g Citric Acid in a tamper proof and resealable tub. Follow the instructions in your recipe.