Whisk the Crimson Batter
Mix: Combine milk, eggs, and oil in a large bowl.
Sift: Gradually whisk in flour, cocoa powder, sugar, and salt until perfectly smooth.
Color: Stir in the red food coloring until the batter is a deep, uniform crimson.
Cook the "Petals"
Sear: Heat a non-stick skillet over medium-low heat. Pour a thin layer of batter and swirl to coat the pan.
Flip: Cook for 45–60 seconds per side. Repeat until all batter is used.
Cool: Stack the crepes and let them cool completely before assembly.
Whip the Filling
Aerate: In a chilled bowl, combine heavy cream, cold milk, and whipped cream mix.
Stiff Peaks: Beat on high speed until the cream is stiff and holds its shape.
Construct the Rose Core
Align: Lay three crepes in a horizontal row, overlapping the edges slightly.
Spread: Apply a thin layer of cream across the center of the row.
Roll: Roll the crepes tightly into a cylinder and stand it upright on a serving plate.
Assemble the Bloom
Wrap: Spread cream on individual crepes and wrap them one by one around the center cylinder.
Fan: Overlap the edges as you go, allowing the tops to fan out slightly to mimic blooming petals.
Set and Serve
Chill: Refrigerate for at least 2 hours. This is essential for the structure to "lock" so the cake can be sliced cleanly.