Obs. rare. [f. TACHE sb.3] trans. To dry (tea) in a ‘tache’ or shallow pan.
1802. Nat. Hist., in Ann. Reg., 765/1. Bohea tea is gathered, sunned in baskets, rolled with the hand, and then tatched, which completes it. Ibid. Tatching seems to give the green colour to the leaves of the tea trees.
