Preheat
the oven to 375°F/190°C/gas 5.
Butter a 9-inch (23-cm) baking pan.
Caramelized Pears: Place the pears in a bowl with
water and
lemon juice for 5 minutes.
Drain well.
Melt the
butter and sugar in a large saucepan over medium
heat and add the pears. Cook for
15-20
minutes,
stirring often, until the pears are caramelized.
Let cool slightly.
Cake: Sift the flour, baking powder,
ginger, chili powder, and salt into a medium bowl.
Beat the butter, sugar, and lemon zest in a large
bowl until creamy.
Add the eggs, beating until just
blended.
Mix in the dry ingredients and yogurt.
Place the pears (round part down) in the pan. Pour
any remaining cooking liquid over the top.
Spoon
the batter over the pears.
Bake for
45-55
minutes, or until springy.
Cool in the pan for 5 minutes.
Turn out onto a serving plate.