Drain the cherries well. Knead marzipan, icing sugar and lemon juice. Form into a roll and cut into 20 pieces. Press each piece of marzipan flat, place one cherry in the middle of each piece, cover with marzipan and form into a ball. Chop the couverture separately and melt in a hot water bath.
Leave to cool a little. Cover the chocolates with the dark chocolate coating and let them dry on a cake rack. Pour the white couverture into a freezer bag. Cut off a small corner and draw the chocolate coating as spirals over the chocolates. Results in 20 pieces