A manual milk frother 10 comprising an inner milk container 16 for holding milk at a first temperature, and an outer hot-liquid 5 container 12 for forming a heating jacket around the inner milk container 16. A manual agitator 18 is used within the inner milk container 16 to induce a foam in the milk. The manual milk frother 10 also has at least one openable closure element 42 for liquid-tightly closing the inner milk container 16 and the outer hot-liquid container 12. Milk at a first temperature within the inner milk container 16 becomes warmed when surrounded by an outer hot liquid in the outer container 12 and frothy when agitated by the manual agitator 18. The outer jacket container may also be used to cool the inner container. The manual agitator may comprise a stem 68a and a head 68b attached to the stem, the agitator head may further comprise a passage such as a hole, slit, or other means by which the inner fluid can pass to assist in froth generation.
