a. [f. TOAST sb.1 + -Y.] Like toast, esp. in having a slightly burnt flavor.

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  Hence Toastiness, ’toasty’ quality (of tea).

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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.

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