When evaluating aromatic tea, focus on the leaf appearance, aroma profile, and infusion clarity. High-quality leaves should be uniform in size and color, indicating consistent processing. The aroma should be natural and persistent, not chemically sharp, which suggests the use of natural essential oils or traditional scenting methods (like jasmine layering) rather than artificial flavorings. For B2B buyers, requesting a Grade Certificate (e.g., SFTGFOP for black tea or AAA for Oolong) is essential to verify the leaf standard.