The invention relates to a liquid reservoir/wick portion and to an electronic smoking device comprising a liquid reservoir/wick portion. In order to avoid different liquids undesirably mixing in a wick of the electronic smoking device, the liquid reservoir/wick portion comprises a wick. The wick comprising a liquid receiving side coupled to a liquid storage volume of the liquid reservoir/wick portion, and a liquid supply side coupled to an atomizing element of the electronic smoking device.