1/3 cup brown sugar
1/3 cup water
1 tablespoon fresh lemon juice
3 large pears, peeled, halved, and cored
1/3 cup walnuts, finely chopped
2 tablespoons brown sugar
1 1/2 tablespoons brandy
1 tablespoon plain yogurt
1 cup whipping cream
1 tablespoon white sugar
2 teaspoons brandy, sherry, or other liqueur