Place the strawberries, sugar and water into a small pan. Bring to a boil and simmer for 5 minutes, then turn off the heat.
Strain the strawberry sauce into a bowl using a fine sieve. Use the back of a spoon to squeeze all of the juice out.*
Pour into a sterilised bottle (or one that's been through the dishwasher on a hot cycle).
*If you would like your strawberry sauce to be clearer rather than cloudy, then don't squeeze the strawberries in the sieve - use a cheesecloth and just allow the sauce to drain through without squeezing (you'll need to leave to drain for at least an hour or two, up to overnight).Store in the fridge, and it should keep for 2-3 weeks..Nutritional Information is per cup.