Obs. [a. F. cassonade, f. casson chest, case: cf. CASSONS.] Unrefined cane-sugar imported in boxes or casks; brown or moist sugar.
1657. Tomlinson, Renous Disp., 224. Another kind of Sugar which the vulgar call Cassonade or Castonade.
1725. Bradley, Fam. Dict., s.v. Sugar, The Cassonade is nothing but Muscovadoe that has been purifyd with the Whites of Eggs and Lime-Water.
1810. Encycl. Brit. (ed. 4), V. 239. Cassonade, in commerce, cask-sugar, or sugar put into casks or chests, after the first purification, but which has not yet been refined.