Oil a 20 x 20cm brownie tin and line with baking parchment. Tip the gingernuts into a food processor and blitz to crumbs. Melt the coconut oil in a small pan over a low heat or in a heatproof bowl in the microwave, then pour this over the crumbs and pulse to combine. Tip the mix into the prepared tin, press into an even layer and chill until needed.

Meanwhile, put the chocolate in a heatproof bowl with 1 tbsp coconut oil and the ginger syrup. Slowly pour 150ml boiling water from the kettle into the chocolate mixture, whisking all the time until you have a smooth ganache. (If you haven’t chopped the chocolate small enough and a few lumps remain, simply zap in the microwave for 10 seconds until smooth.) Stir in a large pinch of salt.

Pour the ganache over the biscuit base and scatter with the stem ginger pieces, pistachios and a sprinkle of salt. Chill for at least 4 hrs until set, then cut into 25 bite-sized squares. Can be made up to three days in advance and kept covered in the fridge. Bring out of the fridge 20 mins before serving to soften up a little.