Place the jam and
water in a saucepan. Heat gently, stirring
occasionally until melted. Boil rapidly for 1
minute, then rub through a sieve, pressing the fruit
against the sides of the sieve with the back of a
wooden spoon. Discard the skins left in the sieve.
Use the warmed glaze to brush cakes before applying
marzipan, or use for glazing fruits on gateaux and
cakes.