01 -
Combine caster sugar and orange juice in a heavy-based saucepan. Gently stir together and set the pan over medium heat. Allow the sugar to dissolve without additional stirring, swirling the pan occasionally for even heating.
02 -
Increase the heat slightly and let the mixture boil until it develops a mid-amber caramel hue, approximately 10–15 minutes. Do not allow the colour to darken excessively.
03 -
Reduce the heat to medium. Add one quarter of the double cream to the caramel, stirring thoroughly. Gradually incorporate another quarter, followed by the remaining cream, stirring after each addition to minimize splattering.
04 -
Add the cubed butter in three or four increments, ensuring each addition fully melts before adding the next. Continue stirring constantly and allow the sauce to cook for an additional 3–5 minutes until smooth and glossy.
05 -
Remove the pan from heat and stir in sea salt, vanilla bean paste, and fresh orange zest. Allow to cool for 30 minutes, then transfer to a sterilized jar.
06 -
Once completely cooled, cover and refrigerate for up to 2 weeks.