Butter Pan well. (I use a 20 cm round with 8 cm walls). Whip chhese until soft and add sugar, combine until fluffy. Add extracts and eggs. Beat until mixed but, not too long. Chop oreos into pieces and fold into mixture. Pour into pan and place in a pan of 1 or more inches of water. Bake at 180ºC or 1.5 hours (check after 1.25 hr) until center is set. Cool in pan of water. When cool turn upside down on plate. The bottom become the top. Sprinkle with cookie crumbs. I sometimes add chopped heath bars or twix bars .