In a bowl, mix the mineral water with the calcium chloride powder and whisk to make a calcium bath.
Add the sodium citrate to the calcium bath to help neutralise some of the vinegar’s PH.
Pour the vinegar into a separate bowl with the sodium alginate and mix with a hand blender.
Pour through a funnel into a syringe or pipette.
Gently and slowly drip the vinegar into the calcium bath to create the pearls.
Once formed, scoop out the pearls and place in a bowl of fresh water. The spherification process will take several minutes.
Serve with your favourite salad.