In a chilled bowl, add the chilled whipping cream. Using a hand mixer or stand mixer, beat the cream until stiff peaks. Add the leftover chocolate ganache, white chocolate ganache. Gently fold the mixture until well combined. Do not over beat the cream at this stage. If you like add peppermint or any other flavour of your choice. Combine and gently spoon the mixture into shot glasses or small serving cups. Give it a couple of taps for air to escape. Repeat the same until all glasses are filled.