For the coconut streusel biscuit: Organise the necessary ingredients. Tip all the ingredients in the stand mixer bowl and mix with the flat beater. We're using unsalted butter and fleur de sel. If you're using salted butter, make sure you don't use fleur de sel. Grease a mousse ring (diameter 14cm) with oil spray and place on a Silpat baking mat. Stop the mixer when the consistency is crumbly. ...