Lewis & Short

rŏsātus, a, um, adj. [rosa], prepared from roses (late Lat.): oleum, Ser. Samm. 34, 637.
Absol.: rŏsātum, i, n., rose wine, Pall. Febr. 32, id. Mai, 13; Lampr. Heliog. 11.
Also, conserve of roses, Apic. 1, 4.