Question: what is the difference between lemon juice and lemon zest?
Answer: Lemon zest, the yellow part of the peel – not the white bitter part – holds the essential oils of the lemon and is thus filled with pure lemon flavor. Lemon juice, on the other hand, has the acidic, tart taste of lemon. Both have their places in cooking. By the way, this is true of the zest of any citrus fruit.