Pear, Pistachio and Ginger Compôte with Grilled Halva Crust

This is based on a simple pudding of grilled halva and walnuts that Michael and I ate in the seaside Turkish village of Gumuslik with our friends Tarik and Savas who own the restaurant ‘changa’ in Istanbul. This compôte is great served with whipped cream and a crisp biscuit (like Changa Nut Shortbread).