Mad Millie Citric Acid Mad Millie Sale! from $3.00 Choose your size: 100g Qty. Sold Out Out Of Stock! We will notify you when this product becomes available. Available on: This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Citric acid is used for acidifying the milk to make cheese such as ricotta, mozzarella and mascarpone. Qty available: 0 SKU: 19668 15% Super Day Discount Food