Malic Acid Is A Natural Fruit Acid Most Commonly Found In Apples. Our Food Grade Malic Acid Powder Is A Natural Sour Agent And Preservative Used To Add Sour Flavors To Candy Or Vinegar Flavor In Potato Chips And Snack Foods10For Wine Making, Malic Acid Lowers Ph A Bit Less Than Tartaric Acid And Is Less Sour. Excellent For Making Acid Adjustments In Gewurztraminer, Muscat, And Reisling Wines When Tartaric Acid Is Not Appropriate. You Do Not Want To Add Malic Acid To Any Wine That Will Undergo A Malolactic Fermentation10Store In A Cool, Dry Place. We Do Not Recommend Refrigeration Or Freezing Of The Powder10Product Of The Usa10Packaged In A Facility That Processes Dairy, Soy, Peanuts, And Wheat Products10