Its the size of a macaroon, but its a butter cookie extruded with a pastry funnel and baked until the edges are toasted. Mmm, so good. Thank you for inventing them @Magister Michael Dilger M.Sc. 

 How did you know so precisely!?  Oh no!  My tin foil hat is leaky! 

 Now thay elon has upgraded starlink satellites, you need to use heavy duty aluminum foil.