BLACK AND WHITE CHEESECAKE (PRESSURE COOKER)

Steps:

• Grease the 7-inch springform pan liberally with butter and set aside.
• Using a food processor, blend cream cheese, sugar and flour for about 15 seconds.
• Add eggs, sour cream and vanilla blending until smooth (about 10 seconds more).
• Do not over mix the batter!
• Remove 1 cup of the batter and blend it into the melted chocolate.
• Pour all of the remaining batter into prepared pan.
• Using a tablespoon, gently drop dollops of the chocolate batter onto the top of the cheesecake (spaced evenly apart).
• Swirl the flat side of a knife through the batter in eight to ten figure-8's to create the swirls.
• Place the pan in the center of a long piece (about 2-feet) of heavy duty aluminum foil.
• Bring the two long ends up to meet, and fold over to seal them together, creating a small tent to allow a bit of space for the rising of the cheesecake.
• Bring the short ends of the foil together, pressing them tightly against the pan.
• Place a trivet or steaming rack on the bottom of the cooker.
• Place the cheesecake on top of the trivet.
• Pour in enough water to reach half way up the sides of the springform pan.
• Lock lid in place.
• Over high heat, bring to high pressure.
• Reduce heat just enough to maintain high pressure, and cook for 35 minutes.
• Turn off heat and allow pressure to drop naturally (about 15 minutes).
• Tilting pan away from you, unlock and remove lid, allowing steam to escape.
• Let cheesecake cool for a few minutes before removing it from the pressure cooker.
• Set pan on a cooling rack, remove foil and allow cheesecake to cool to room temperature.
• If there is a tiny puddle of water on the middle of the cake, gently blot it up with a paper towel.
• Cover and refrigerate at least 6 hours or overnight.
• Before serving, bring the cheesecake to room temperature, remove sides of pan (leave pan base in place, and set on serving platter).
• Arrange berries on top and around sides of cake, slice and serve.
• NOTE: For Lemon Cheesecake, omit the vanilla extract and the chocolate from the recipe, do not set aside 1 cup of batter.
• Add 1 Tablespoon of freshly grated lemon zest to all of the batter, blending well, and proceed with baking instructions.