Bring the strawberries (preferably from Europe) briefly to the boil with water and sugar and drain through a sieve. Use 2 sheets of gelatine per 100ml of drained strawberry water. Let the gelatine swell in cold water. In a saucepan, heat up a finger's breadth of water and melt the gelatine. Mix everything together, place in a mould and chill, preferably overnight. Tip: If the jelly is not firm enough, melt again over a water bath and add the gelatine. If the jelly is too firm, melt again over a water bath and add liquid.