To make the paste, boil the almonds and remove the peel. Once they are cold and somewhat dry, put them in a food processor or a blender and chop them finely.
Put the chopped almonds in a bowl, add the zest of the two lemons, the sugar, the ground coffee and the cocoa powder. Mix everything very well.
Add the egg whites and mix until the egg whites dilute the sugar and the mixture becomes a paste.
Take a lump of mixture in your hand, roll it into a ball the size slightly smaller than a golf ball.
Roll the ball completely into the sugar and place it on a baking sheet.
Slightly insert a coffee bean on top of each cookie.
Roll all your cookies and bake them for 15 mins. at 350F.