Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Grease square springform pan (24 x 24 cm; alternatively round, 26 cm Ø). Break chocolate into pieces for the dough.
Melt with 250 g butter in pieces in a saucepan at low heat.
Beat the eggs, sugar and 1 pinch of salt with the whisks of the mixer for 3-4 minutes until creamy. Remove the chocolate butter from the heat and immediately stir into the egg mixture.
Mix flour, cocoa and baking powder. Quickly stir into the chocolate-egg mixture.
Coarsely chop the almonds and fold them into the dough. Smooth in the form. Bake in a hot oven for about 25 minutes. Take out and let cool down for about 30 minutes. Cut the salt sticks into pieces of about 4 cm length and put them vertically into the brownie in small groups.
Let it cool down.
Melt the chocolate in a hot water bath. Pour into the freezer bag and cut off a small corner. Spray the chocolate in a grid pattern over the salt sticks and let it dry. Take the brownie out of the tin and cut it into pieces of about 4 x 4 cm.