Cut the two sandwich cookies into the four ear pieces before blending, with a small board and stable work surface. Keep the pieces dry and protected while the drink is made. Smooth marmalade is the listed ingredient; a chunky preserve can leave larger peel pieces in a shake intended to blend smoothly.
The drink remains naturally chocolate-brown. Use the cookie ears and small face details for the cat effect rather than adding coloring to chase a black appearance. Divide the shake, add cream and press in two ear pieces per glass. Serve immediately before the cream softens under the cookies, with a spoon ready to help eat the topping as well as the drink.
Timing and servings are estimates. Equipment, ingredients and portion sizes affect the result.
