Examples disclosed herein relate to methods and systems for controllably removing one or more solutes from a solution. Examples disclosed herein relate to methods and systems for removing water from alcoholic beverages.

A liquid beer concentrate is disclosed having a water content of 25-90 wt. %, a carbohydrate content of 5-50 wt. %, a protein content of 1-6 wt. % and an ethanol content of 0-50 wt. %, and comprising 0.01-1.5 g/L of dissolved ascorbate. It was discovered that the development of off-flavour notes and/or haze formation in the liquid beer concentrate can be prevented or at least minimised by adding a small amount of ascorbate.