Preheat oven to 350F. In a small bowl, combine graham cracker crumbs, sugar, and melted butter until crumbly. Press into the bottom and 1-in up the sides of a 9-inch springform pan with a removable bottom.
Bake crust 8-10 minutes until very lightly browned. Cool crust completely on a wire cooling rack.
In a large bowl with an electric mixer, beat softened cream cheese until completely creamy, about 1-2 minutes of beating. Beat in sugar and eggs + egg yolks one at a time until smooth. Gradually beat in rose, melted white chocolate, and flour until filling is smooth and creamy.
Pour filling into crust and smooth top. Place springform pan into a larger baking pan and place in oven. Pour boiling water into larger baking pan 1-inch up the sides to make a water bath for the cheesecake.
Bake cheesecake 55-60 minutes at 350F until edges of cake are set (the center will still be wobbly when shaken) Run a knife around the edges of cheesecake, then let cool completely on a wire cooling rack.
When completely cooled, remove sides from cheesecake. Chill cheesecake completely in fridge. When ready to serve, slice cheesecake into wedges and serve cold with rhubarb sauce on top. Enjoy!