What is the difference between lemon zest and lemon juice, and how do they each contribute to the flavor of a dish?

Lemon zest is the outermost layer of the lemon peel, containing aromatic oils that provide a strong citrus flavor. Lemon juice is the liquid extracted from the pulp of the lemon, offering a tangy and acidic taste. Lemon zest adds a bright and intense citrus aroma to dishes, while lemon juice provides a sharp and acidic flavor that enhances the overall taste profile.