AkVo Mineral Drops give you an easy way to adjust your brewing water and explore how minerals change what you taste in coffee. AkVo is a Polish brand specialised in water filtration and water chemistry.
Add them to filtered water, very soft bottled water, distilled water or reverse-osmosis water to create a mineral profile that suits your coffee. The range combines buffer bottles with magnesium (Clear and Pink) and a calcium bottle (Blue).
Blue is pure calcium chloride. It adds hardness without any buffer, so the acidity of the coffee stays intact. Calcium adds structure and the chloride gives a rounder, sweeter mouthfeel, while fruity notes stay lively.
Why every coffee lover wants this:
- Build your own water: adjust the mineral profile of your brewing water
- Calcium only: calcium chloride (CaCl₂), no buffer, so you control hardness and buffer separately
- Structure and sweetness: adds body and roundness without dulling acidity
- Made to combine: use it on top of Clear or Pink
Recipes suggested by AkVo (per 0.5 litre of water):
Everyday: 3 drops Clear + 4 to 5 drops Blue
Ultra-light roasts: 2 drops Pink + 1 drop Clear + 5 drops Blue
Bitter or very fermented coffees: more Pink, or Pink only
“Green” aromas: 3 to 4 drops Pink + 1 to 2 drops Clear
Keep Clear and Pink together to a maximum of 5 drops per 0.5 litre. Blue comes on top of that.
Details:
Ingredients: H₂O, CaCl₂
Minerals: Calcium
Compatible water: Filtered, very soft bottled, distilled or reverse-osmosis water
Pre-brew: 3 to 5 drops per 0.5 litre of water
Post-brew: 1 drop in a cup of filter coffee or in a finished espresso, ideally from one bottle
Yield: about 90 litres of brewing water at 4 drops per 0.5 litre
The right dose depends on your own water: start low, taste, and adjust. Use the drops in brewing water, or add them to the cup after brewing, espresso included. Using them in an espresso machine or other equipment with a boiler? Keep the dose low: at higher concentrations, chloride can cause corrosion and bicarbonate can cause scale.
