Knead 175 g flour, 50 g sugar, 1 pinch of salt, 100 g butter in pieces and egg first with the dough hooks of the hand mixer, then quickly with your hands to a smooth dough. Form on some flour to a roll (approx. 5 cm Ø). Cover and chill for approx. 1 hour.
Macadamia nuts rinse, drip off and rub dry well. Cut the dough into approx. 20 slices, press a little flatter. Place on 2 baking trays lined with baking paper. Spread the nuts on the talers and press them lightly. Bake in a hot oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for 8-10 minutes. Allow to cool slightly
Bring 300 g sugar, 7 tablespoons water and 25 g butter to the boil. Boil while stirring until the caramel is golden yellow. Spoon over the nuts with a tablespoon. If necessary, briefly heat up again in between. Let dry for about 15 minutes.
Chop the couverture and melt it with the plate fat in a hot water bath. Place the macadamia thaler on a fork and dip the side of the dough into the couverture. Drain, place on a cake rack and let dry