We use Cold Pressure, which is an alternative to heat pasteurzation. This kills harmful bacteria while locking in all of the good stuff like vitamins, nutrients, taste, color and texture. This is a proven food technology used for many other products (cold pressed juice and hummus included) that ensures our product is totally safe. Since HPP is so amazing, we don't use any additives, preservatives, colors or stabilizers so it's extra important to keep your babyblends refrigerated until feeding time!