Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Line the bottom of a springform pan (26 cm Ø) with baking paper. Sieve the flour, tea and baking powder into a bowl. Mix with sugar, almonds and 1 pinch of salt. Clean, wash and thinly peel the zucchini (put the peels aside). Grate the zucchini roughly. Add the oil and 4 eggs to the flour mixture. Mix everything well with the whisks of the mixer. Fill the dough into the springform pan, smooth it down and bake it for 50-60 minutes (test it with sticks!). Take out and let cool down for about 20 minutes.
In the meantime, stir 2 tbsp. icing sugar with tequila and lime juice until smooth. Soak the cake in it and let it cool down.
For the buttercream, break the chocolate into pieces, melt in a hot water bath and let it cool down. Separate 3 eggs (they should be at room temperature so that the cream does not curdle). Beat the egg whites until stiff. Cream butter and 1 vanilla sugar with the whisks of the mixer. Stir the egg yolks into the butter cream. Stir in chocolate and 1 Msp. food colouring. Fold in the egg white.
Place a cake ring around the cake base and spread the cream evenly on the base. Place the cake in a cool place (preferably overnight).
Cut the zucchini peel into very fine strips. Whip the cream until stiff, while pouring in 1 vanilla sugar. Fill half into a piping bag and squirt tuffs onto the cake. Spread the rest of the cream around the edge. Decorate with zucchini peels.