PINEAPPLE UPSIDE DOWN CAKE 菠萝翻转蛋糕

• butter (for greasing)
• 2 tablespoons sugar
• 6 slices fresh/canned pineapple in juice (plus 3 tablespoons of  rum)
• ? cup all-purpose flour 
• 1 teaspoon baking powder
• ¼ teaspoon baking soda
• 1 stick soft butter
• ½ cup superfine sugar
• 2 large eggs
• Preheat the oven to 200°C/180°C Fan/gas mark 6/400ºF. 
   
  Bake for 30 minutes, then ease a spatula around the edge of the tin, place a plate on top and turn it upside-down.
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