a. [f. TOAST sb.1 + -Y.] Like toast, esp. in having a slightly burnt flavor.
Hence Toastiness, toasty quality (of tea).
1892. Walsh, Tea (Philad.), 100. The infusion is also darker in draw, but very toasty, that is burnt in flavor, owing to too high firing. Ibid., 72. The finer grades [of Pakeong] yield a rich ripe flavor but lacking in that toastiness for which the former [kinds of tea] are so much admired.