Heat the oven to 180C/160C fan/gas 4 and line two baking sheets with baking parchment. Melt the butter, sugar and golden syrup together in a small saucepan over a low heat, stirring for 8-10 mins until smooth and combined. Turn off the heat and whisk in the flour, then the ginger, almonds, pistachios, orange zest and a pinch of salt.

Scoop 10-12 tablespoons of the mixture onto the prepared baking sheets, leaving room between each for spreading. Bake for 10 mins until golden, then leave to cool on the sheets for 2 mins until firm enough to lift onto a wire rack. Leave to cool completely. Repeat with the remaining florentine mixture.

Melt the chocolate in a heatproof bowl set over a pan of simmering water, ensuring the bowl doesn’t touch the water, or in the microwave in 30-second bursts. Carefully flip the florentines over on the wire rack. Spoon the chocolate onto the bases and gently spread it to the edges. When the chocolate has cooled a little, use a fork to draw wavy lines in it, if you like. Leave to set completely (for about 1 hr in a cool room). Will keep in an airtight container for up to two weeks.