Nikolaschka - AbsoluteAstronomy.com

A Nikolaschka is typically an after dinner drink.

1.5 oz Cognac
Cognac (drink)
Cognac , named after the town of Cognac in France, is a variety of brandy. It is produced in the wine-growing region surrounding the town from which it takes its name, in the French Departements of Charente and Charente-Maritime....
1 lemon
Lemon
The lemon is both a small evergreen tree native to Asia, and the tree's ellipsoidal yellow fruit. The fruit is used for culinary and non-culinary purposes throughout the world – primarily for its juice, though the pulp and rind are also used, mainly in cooking and baking...

disk, peeled
1 teaspoon powdered coffee
Coffee
Coffee is a brewed beverage with a dark,init brooo acidic flavor prepared from the roasted seeds of the coffee plant, colloquially called coffee beans. The beans are found in coffee cherries, which grow on trees cultivated in over 70 countries, primarily in equatorial Latin America, Southeast Asia,...
1 teaspoon of powdered sugar
Powdered sugar
Powdered sugar, also known as confectioners' sugar or icing sugar, is very fine sugar. When intended for home use, it typically contains a small amount of anti-caking agent....

Pour cognac brandy snifter and place the lemon disk on top of the glass. Next cover half of the disk with coffee powder and the other half with a powdered sugar and serve.
For a Vodka Nikolaschka, substitute vodka

Vodka

Vodka , is a distilled beverage. It is composed primarily of water and ethanol with traces of impurities and flavorings. Vodka is made by the distillation of fermented substances such as grains, potatoes, or sometimes fruits....

for the cognac and an orange (fruit)

Orange (fruit)

An orange—specifically, the sweet orange—is the citrus Citrus × sinensis and its fruit. It is the most commonly grown tree fruit in the world....

disk for the lemon disk.