The distinction is critical for your target market. Ceremonial Grade is made from the youngest tea leaves (first harvest), stone-ground into a fine powder, and features a vibrant emerald green color and a naturally sweet, umami flavor; it is intended for whisking with water. Culinary Grade is made from later harvests, has a dull or brownish-green hue, and a more astringent, bold flavor profile designed to stand up to heat and sugar in baking, smoothies, or lattes. Always request a color and flavor profile sheet from the supplier to ensure the grade matches your application.