Lemon Pudding Cake From Moosewood

• 8 ramekins
• 4 lemons
• 4 egg whites
• 2 egg yolks (lightly beaten)
• 2 lemon zest (optional)
• 2 deep baking (pan)
• 350 ml buttermilk
• 120 ml lemon juice about (fresh)
• 65 gr all purpose flour unbleached
• 2 gr baking powder