Defrost the chocolate ice cream. Bring 1/2 litre water and white wine to the boil. Cut the vanilla pod lengthwise and scrape out the pulp. Add vanilla pulp, lemon juice and sugar to the brew. Wash and halve the pears and cook them in the stock for about 15 minutes at medium heat.
Then let it cool down a little. Cut 1 half each to fan. Arrange ice sauce and pear halves on plates. Grate the chocolate with a peeler. Serve decorated with wafer rolls and lemon balm.