Soft-set grapefruit and vanilla jam

1.Peel and segment ruby grapefruit over a saucepan to catch any juice, squeeze in any juices from the membrane and add the segments. Add caster sugar, lemon juice and vanilla. Bring to a simmer over medium heat, stir to dissolve sugar and cook until syrupy and jam reaches a soft-setting point (20-30 minutes; to test, spoon a little jam onto a chilled saucer and draw your finger through the mixture – it should leave a line that holds for a few seconds). Spoon into sterilised jars, cool and refrigerate overnight to set. Serve on thick-cut toast spread with ricotta.